diff --git a/Projects/DataSource/Sources/Common/DataSourceDependencyAssembler.swift b/Projects/DataSource/Sources/Common/DataSourceDependencyAssembler.swift
index 3fc72eb6..8b5b8b6d 100644
--- a/Projects/DataSource/Sources/Common/DataSourceDependencyAssembler.swift
+++ b/Projects/DataSource/Sources/Common/DataSourceDependencyAssembler.swift
@@ -25,7 +25,7 @@ public struct DataSourceDependencyAssembler: DependencyAssemblerProtocol {
             let networkService = DIContainer.shared.resolve(type: NetworkServiceProtocol.self),
             let keychainStorage = DIContainer.shared.resolve(type: KeychainStorageProtocol.self),
             let userDefaultsStorage = DIContainer.shared.resolve(type: UserDefaultsStorageProtocol.self)
-        else { return }
+        else { fatalError("networkService, keychainStorage, userDefaultsStorage 의존성이 등록되지 않았습니다.") }
 
         DIContainer.shared.register(type: AuthRepositoryProtocol.self) { _ in
             return AuthRepository(
@@ -33,5 +33,9 @@ public struct DataSourceDependencyAssembler: DependencyAssemblerProtocol {
                 keychainStorage: keychainStorage,
                 userDefaultsStorage: userDefaultsStorage)
         }
+
+        DIContainer.shared.register(type: OnboardingRepositoryProtocol.self) { _ in
+            return OnboardingRepository(networkService: networkService, keychainStorage: keychainStorage)
+        }
     }
 }
diff --git a/Projects/DataSource/Sources/Common/Error/AuthError.swift b/Projects/DataSource/Sources/Common/Error/AuthError.swift
index 33c82da0..babca118 100644
--- a/Projects/DataSource/Sources/Common/Error/AuthError.swift
+++ b/Projects/DataSource/Sources/Common/Error/AuthError.swift
@@ -13,6 +13,7 @@ enum AuthError: Error, CustomStringConvertible {
     case nicknameSaveFailed
     case nicknameLoadFailed
     case nicknameRemoveFailed
+    case invalidUserData
     case unknown(Error)
 
     public var description: String {
@@ -31,6 +32,8 @@ enum AuthError: Error, CustomStringConvertible {
             return "닉네임 불러오기에 실패했습니다."
         case .nicknameRemoveFailed:
             return "닉네임 삭제에 실패했습니다."
+        case .invalidUserData:
+            return "서버 응답에 사용자 정보가 포함되어 있지 않습니다."
         case .unknown(let error):
             return "알 수 없는 에러가 발생했습니다. \(error.localizedDescription)"
         }
diff --git a/Projects/DataSource/Sources/DTO/EmptyResponseDTO.swift b/Projects/DataSource/Sources/DTO/EmptyResponseDTO.swift
new file mode 100644
index 00000000..61216c5b
--- /dev/null
+++ b/Projects/DataSource/Sources/DTO/EmptyResponseDTO.swift
@@ -0,0 +1,8 @@
+//
+//  EmptyResponseDTO.swift
+//  DataSource
+//
+//  Created by 최정인 on 7/15/25.
+//
+
+struct EmptyResponseDTO: Decodable {}
diff --git a/Projects/DataSource/Sources/DTO/LoginResponseDTO.swift b/Projects/DataSource/Sources/DTO/LoginResponseDTO.swift
index 7b16f7b1..ffdbcb76 100644
--- a/Projects/DataSource/Sources/DTO/LoginResponseDTO.swift
+++ b/Projects/DataSource/Sources/DTO/LoginResponseDTO.swift
@@ -7,9 +7,7 @@
 
 import Domain
 
-typealias LoginResponseDTO = BaseResponseDTO<LoginResponse>
-
-struct LoginResponse: Decodable {
+struct LoginResponseDTO: Decodable {
     let accessToken: String
     let refreshToken: String
     let userState: String
@@ -21,7 +19,7 @@ struct LoginResponse: Decodable {
     }
 }
 
-extension LoginResponse {
+extension LoginResponseDTO {
     func toUserEntity() -> UserEntity {
         return UserEntity(
             accessToken: accessToken,
diff --git a/Projects/DataSource/Sources/DTO/RecommendedRoutineDTO.swift b/Projects/DataSource/Sources/DTO/RecommendedRoutineDTO.swift
new file mode 100644
index 00000000..51a59a6e
--- /dev/null
+++ b/Projects/DataSource/Sources/DTO/RecommendedRoutineDTO.swift
@@ -0,0 +1,43 @@
+//
+//  RecommendedRoutineDTO.swift
+//  DataSource
+//
+//  Created by 최정인 on 7/15/25.
+//
+
+import Domain
+
+struct RecommendedRoutineListResponseDTO: Decodable {
+    let recommendedRoutines: [RecommendedRoutineDTO]
+}
+
+struct RecommendedRoutineDTO: Decodable {
+    let id: Int
+    let routineName: String
+    let routineDescription: String
+    let subRoutines: [SubRoutine]
+
+    enum CodingKeys: String, CodingKey {
+        case id = "recommendedRoutineId"
+        case routineName = "recommendedRoutineName"
+        case routineDescription
+        case subRoutines = "recommendedSubRoutines"
+    }
+
+    func toRecommendedRoutineEntity() -> RecommendedRoutineEntity {
+        return RecommendedRoutineEntity(
+            id: id,
+            title: routineName,
+            description: routineDescription)
+    }
+}
+
+struct SubRoutine: Decodable {
+    let id: Int
+    let routineName: String
+
+    enum CodingKeys: String, CodingKey {
+        case id = "recommendedSubRoutineId"
+        case routineName = "recommendedSubRoutineName"
+    }
+}
diff --git a/Projects/DataSource/Sources/Endpoints/AuthEndpoint.swift b/Projects/DataSource/Sources/Endpoint/AuthEndpoint.swift
similarity index 100%
rename from Projects/DataSource/Sources/Endpoints/AuthEndpoint.swift
rename to Projects/DataSource/Sources/Endpoint/AuthEndpoint.swift
diff --git a/Projects/DataSource/Sources/Endpoint/OnboardingEndpoint.swift b/Projects/DataSource/Sources/Endpoint/OnboardingEndpoint.swift
new file mode 100644
index 00000000..e0be0991
--- /dev/null
+++ b/Projects/DataSource/Sources/Endpoint/OnboardingEndpoint.swift
@@ -0,0 +1,59 @@
+//
+//  OnboardingEndpoint.swift
+//  DataSource
+//
+//  Created by 최정인 on 7/15/25.
+//
+
+import Foundation
+
+enum OnboardingEndpoint {
+    case registerOnboarding(accessToken: String, choices: [String: String])
+    case registerRecommendedRoutine(accessToken: String, selectedRoutines: [Int])
+}
+
+extension OnboardingEndpoint: Endpoint {
+    var baseURL: String {
+        return AppProperties.baseURL + "/api/v1/onboardings"
+    }
+
+    var path: String {
+        switch self {
+        case .registerOnboarding: baseURL
+        case .registerRecommendedRoutine: baseURL + "/routines"
+        }
+    }
+    
+    var method: HTTPMethod {
+        return .post
+    }
+    
+    var headers: [String : String] {
+        var headers: [String: String] = [
+            "Content-Type": "application/json",
+            "accept": "*/*"
+        ]
+
+        switch self {
+        case .registerOnboarding(let accessToken, _):
+            headers["Authorization"] = "Bearer \(accessToken)"
+        case .registerRecommendedRoutine(let accessToken, _):
+            headers["Authorization"] = "Bearer \(accessToken)"
+        }
+
+        return headers
+    }
+    
+    var queryParameters: [String : String] {
+        return [:]
+    }
+    
+    var bodyParameters: [String : Any] {
+        switch self {
+        case .registerOnboarding(_, let choices):
+            return choices
+        case .registerRecommendedRoutine(_, let selectedRoutines):
+            return ["recommendedRoutineIds": selectedRoutines]
+        }
+    }
+}
diff --git a/Projects/DataSource/Sources/Protocols/KeychainStorageProtocol.swift b/Projects/DataSource/Sources/Protocol/KeychainStorageProtocol.swift
similarity index 100%
rename from Projects/DataSource/Sources/Protocols/KeychainStorageProtocol.swift
rename to Projects/DataSource/Sources/Protocol/KeychainStorageProtocol.swift
diff --git a/Projects/DataSource/Sources/Protocols/NetworkServiceProtocol.swift b/Projects/DataSource/Sources/Protocol/NetworkServiceProtocol.swift
similarity index 96%
rename from Projects/DataSource/Sources/Protocols/NetworkServiceProtocol.swift
rename to Projects/DataSource/Sources/Protocol/NetworkServiceProtocol.swift
index 8776cad2..b4f07c58 100644
--- a/Projects/DataSource/Sources/Protocols/NetworkServiceProtocol.swift
+++ b/Projects/DataSource/Sources/Protocol/NetworkServiceProtocol.swift
@@ -15,5 +15,5 @@ public protocol NetworkServiceProtocol {
     ///   - endpoint: 요청을 보낼 API Endpoint 정보
     ///   - type: 디코딩할 Response DTO 타입
     /// - Returns: 응답 데이터를 디코딩한 객체
-    func request<T: Decodable>(endpoint: Endpoint, type: T.Type) async throws -> T
+    func request<T: Decodable>(endpoint: Endpoint, type: T.Type) async throws -> T?
 }
diff --git a/Projects/DataSource/Sources/Protocols/UserDefaultsStorageProtocol.swift b/Projects/DataSource/Sources/Protocol/UserDefaultsStorageProtocol.swift
similarity index 100%
rename from Projects/DataSource/Sources/Protocols/UserDefaultsStorageProtocol.swift
rename to Projects/DataSource/Sources/Protocol/UserDefaultsStorageProtocol.swift
diff --git a/Projects/DataSource/Sources/Repositories/AuthRepository.swift b/Projects/DataSource/Sources/Repository/AuthRepository.swift
similarity index 77%
rename from Projects/DataSource/Sources/Repositories/AuthRepository.swift
rename to Projects/DataSource/Sources/Repository/AuthRepository.swift
index 721f9c62..ea88542c 100644
--- a/Projects/DataSource/Sources/Repositories/AuthRepository.swift
+++ b/Projects/DataSource/Sources/Repository/AuthRepository.swift
@@ -11,12 +11,12 @@ import Shared
 import KakaoSDKUser
 import KakaoSDKAuth
 
-public final class AuthRepository: AuthRepositoryProtocol {
+final class AuthRepository: AuthRepositoryProtocol {
     private let networkService: NetworkServiceProtocol
     private let keychainStorage: KeychainStorageProtocol
     private let userDefaultsStorage: UserDefaultsStorageProtocol
 
-    public init(
+    init(
         networkService: NetworkServiceProtocol,
         keychainStorage: KeychainStorageProtocol,
         userDefaultsStorage: UserDefaultsStorageProtocol
@@ -26,12 +26,16 @@ public final class AuthRepository: AuthRepositoryProtocol {
         self.userDefaultsStorage = userDefaultsStorage
     }
 
-    public func kakaoLogin() async throws {
+    func kakaoLogin() async throws -> UserEntity {
         let accessToken = try await fetchKakaoToken()
-        try await requestServerLogin(socialType: .kakao, nickname: nil, token: accessToken)
+        let user = try await requestServerLogin(
+            socialType: .kakao,
+            nickname: nil,
+            token: accessToken)
+        return user
     }
 
-    public func appleLogin(nickname: String?, authToken: String) async throws {
+    func appleLogin(nickname: String?, authToken: String) async throws -> UserEntity {
         var savedNickname: String = ""
         if let nickname {
             try saveNickname(nickname: nickname)
@@ -39,39 +43,43 @@ public final class AuthRepository: AuthRepositoryProtocol {
         } else {
             savedNickname = try loadNickname()
         }
-        try await requestServerLogin(socialType: .apple, nickname: savedNickname, token: authToken)
+        let user = try await requestServerLogin(
+            socialType: .apple,
+            nickname: savedNickname,
+            token: authToken)
+        return user
     }
 
-    public func submitAgreement(agreements: [TermsType : Bool]) async throws {
+    func submitAgreement(agreements: [TermsType : Bool]) async throws {
         let accessToken = try loadToken(tokenType: .accessToken)
         let endpoint = AuthEndpoint.agreements(accessToken: accessToken, agreements: agreements)
-        let response = try await networkService.request(endpoint: endpoint, type: BaseResponseDTO<EmptyResponse>.self)
-        BitnagilLogger.log(logType: .debug, message: "\(response)")
+        _ = try await networkService.request(endpoint: endpoint, type: EmptyResponseDTO.self)
     }
 
-    public func logout() async throws {
+    func logout() async throws {
         let accessToken = try loadToken(tokenType: .accessToken)
         let endpoint = AuthEndpoint.logout(accessToken: accessToken)
-        let response = try await networkService.request(endpoint: endpoint, type: BaseResponseDTO<String>.self)
+        _ = try await networkService.request(endpoint: endpoint, type: String.self)
         try removeToken()
-        BitnagilLogger.log(logType: .debug, message: "\(response.message)")
     }
 
-    public func withdraw() async throws {
+    func withdraw() async throws {
         let accessToken = try loadToken(tokenType: .accessToken)
         let endpoint = AuthEndpoint.withdraw(accessToken: accessToken)
-        let response = try await networkService.request(endpoint: endpoint, type: BaseResponseDTO<String>.self)
+        _ = try await networkService.request(endpoint: endpoint, type: String.self)
         try removeToken()
         try removeNickname()
-        BitnagilLogger.log(logType: .debug, message: "\(response.message)")
     }
 
-    public func reissueToken() async throws {
+    func reissueToken() async throws {
         let refreshToken = try loadToken(tokenType: .refreshToken)
         let endpoint = AuthEndpoint.reissue(refreshToken: refreshToken)
-        let userResponse = try await networkService.request(endpoint: endpoint, type: LoginResponseDTO.self)
+
+        guard let userResponse = try await networkService.request(endpoint: endpoint, type: LoginResponseDTO.self)
+        else { return }
+        let userEntity = userResponse.toUserEntity()
+
         guard
-            let userEntity = userResponse.data?.toUserEntity(),
             saveToken(tokenType: .accessToken, token: userEntity.accessToken),
             saveToken(tokenType: .refreshToken, token: userEntity.refreshToken)
         else { throw AuthError.tokenSaveFailed }
@@ -80,7 +88,7 @@ public final class AuthRepository: AuthRepositoryProtocol {
         BitnagilLogger.log(logType: .debug, message: "AccessToken Saved: \(userEntity.accessToken)")
         BitnagilLogger.log(logType: .debug, message: "RefreshToken Saved: \(userEntity.refreshToken)")
     }
-    
+
     private func fetchKakaoToken() async throws -> String {
         try await withCheckedThrowingContinuation { continuation in
             let resultHandler: (OAuthToken?, Error?) -> Void = { oauthToken, error in
@@ -107,15 +115,17 @@ public final class AuthRepository: AuthRepositoryProtocol {
         socialType: SocialLoginType,
         nickname: String?,
         token: String
-    ) async throws {
+    ) async throws -> UserEntity {
         let endpoint = AuthEndpoint.login(
             socialLoginType: socialType,
             nickname: nickname,
             token: token)
 
-        let userResponse = try await networkService.request(endpoint: endpoint, type: LoginResponseDTO.self)
+        guard let userResponse = try await networkService.request(endpoint: endpoint, type: LoginResponseDTO.self)
+        else { throw AuthError.invalidUserData }
+
+        let userEntity = userResponse.toUserEntity()
         guard
-            let userEntity = userResponse.data?.toUserEntity(),
             saveToken(tokenType: .accessToken, token: userEntity.accessToken),
             saveToken(tokenType: .refreshToken, token: userEntity.refreshToken)
         else { throw AuthError.tokenSaveFailed }
@@ -123,6 +133,8 @@ public final class AuthRepository: AuthRepositoryProtocol {
         BitnagilLogger.log(logType: .debug, message: "User Logined: \(userEntity.userState)")
         BitnagilLogger.log(logType: .debug, message: "AccessToken Saved: \(userEntity.accessToken)")
         BitnagilLogger.log(logType: .debug, message: "RefreshToken Saved: \(userEntity.refreshToken)")
+
+        return userEntity
     }
 
     private func saveToken(tokenType: TokenType, token: String) -> Bool {
diff --git a/Projects/DataSource/Sources/Repository/OnboardingRepository.swift b/Projects/DataSource/Sources/Repository/OnboardingRepository.swift
new file mode 100644
index 00000000..1f1ebe03
--- /dev/null
+++ b/Projects/DataSource/Sources/Repository/OnboardingRepository.swift
@@ -0,0 +1,42 @@
+//
+//  OnboardingRepository.swift
+//  DataSource
+//
+//  Created by 최정인 on 7/15/25.
+//
+
+import Domain
+
+final class OnboardingRepository: OnboardingRepositoryProtocol {
+    private let networkService: NetworkServiceProtocol
+    private let keychainStorage: KeychainStorageProtocol
+
+    init(networkService: NetworkServiceProtocol, keychainStorage: KeychainStorageProtocol) {
+        self.networkService = networkService
+        self.keychainStorage = keychainStorage
+    }
+
+    func registerOnboarding(onboardingChoices: [String : String]) async throws -> [RecommendedRoutineEntity] {
+        let accessToken = try loadToken(tokenType: .accessToken)
+        let endpoint = OnboardingEndpoint.registerOnboarding(accessToken: accessToken, choices: onboardingChoices)
+
+        guard let response = try await networkService.request(endpoint: endpoint, type: RecommendedRoutineListResponseDTO.self)
+        else { return [] }
+
+        let recommendedRoutineEntity = response.recommendedRoutines.compactMap({ $0.toRecommendedRoutineEntity() })
+        return recommendedRoutineEntity
+    }
+
+    func registerRecommendedRoutines(selectedRoutines: [Int]) async throws {
+        let accessToken = try loadToken(tokenType: .accessToken)
+        let endpoint = OnboardingEndpoint.registerRecommendedRoutine(accessToken: accessToken, selectedRoutines: selectedRoutines)
+        _ = try await networkService.request(endpoint: endpoint, type: EmptyResponseDTO.self)
+    }
+
+    private func loadToken(tokenType: TokenType) throws -> String {
+        guard let token = keychainStorage.load(forKey: tokenType.rawValue) else {
+            throw AuthError.tokenLoadFailed
+        }
+        return token
+    }
+}
diff --git a/Projects/Domain/Sources/DomainDependencyAssembler.swift b/Projects/Domain/Sources/DomainDependencyAssembler.swift
index 97eeccf2..dffbecbe 100644
--- a/Projects/Domain/Sources/DomainDependencyAssembler.swift
+++ b/Projects/Domain/Sources/DomainDependencyAssembler.swift
@@ -18,9 +18,8 @@ public struct DomainDependencyAssembler: DependencyAssemblerProtocol {
     public func assemble() {
         preAssembler.assemble()
 
-        guard let authRepository = DIContainer.shared.resolve(type: AuthRepositoryProtocol.self) else {
-            return
-        }
+        guard let authRepository = DIContainer.shared.resolve(type: AuthRepositoryProtocol.self)
+        else { fatalError("authRepository 의존성이 등록되지 않았습니다.") }
 
         DIContainer.shared.register(type: LoginUseCaseProtocol.self) { _ in
             return LoginUseCase(authRepository: authRepository)
@@ -33,5 +32,12 @@ public struct DomainDependencyAssembler: DependencyAssemblerProtocol {
         DIContainer.shared.register(type: WithdrawUseCaseProtocol.self) { _ in
             return WithdrawUseCase(authRepository: authRepository)
         }
+
+        DIContainer.shared.register(type: OnboardingUseCaseProtocol.self) { container in
+            guard let onboardingRepository = container.resolve(type: OnboardingRepositoryProtocol.self)
+            else { fatalError("onboardingRepository 의존성이 등록되지 않았습니다.") }
+
+            return OnboardingUseCase(onboardingRepository: onboardingRepository)
+        }
     }
 }
diff --git a/Projects/Domain/Sources/Entity/Enum/OnboardingChoiceType.swift b/Projects/Domain/Sources/Entity/Enum/OnboardingChoiceType.swift
new file mode 100644
index 00000000..ca6f3185
--- /dev/null
+++ b/Projects/Domain/Sources/Entity/Enum/OnboardingChoiceType.swift
@@ -0,0 +1,73 @@
+//
+//  OnboardingChoiceType.swift
+//  Domain
+//
+//  Created by 최정인 on 7/15/25.
+//
+
+public enum OnboardingChoiceType: CaseIterable {
+    case morningTime
+    case eveningTime
+    case allTime
+
+    case never
+    case rarely
+    case sometimes
+    case often
+
+    case stability
+    case connection
+    case growth
+    case vitality
+
+    case once
+    case twoToThree
+    case fourOrMore
+    case notSure
+
+    public var onboardingType: OnboardingType {
+        switch self {
+        case .morningTime: .time
+        case .eveningTime: .time
+        case .allTime: .time
+
+        case .never: .frequency
+        case .rarely: .frequency
+        case .sometimes: .frequency
+        case .often: .frequency
+
+        case .stability: .feeling
+        case .connection: .feeling
+        case .growth: .feeling
+        case .vitality: .feeling
+
+        case .once: .outdoor
+        case .twoToThree: .outdoor
+        case .fourOrMore: .outdoor
+        case .notSure: .outdoor
+        }
+    }
+
+    var value: String {
+        switch self {
+        case .morningTime: "MORNING"
+        case .eveningTime: "EVENING"
+        case .allTime: "NOTHING"
+
+        case .never: "ZERO_PER_WEEK"
+        case .rarely: "ONE_TO_TWO_PER_WEEK"
+        case .sometimes: "THREE_TO_FOUR_PER_WEEK"
+        case .often: "MORE_THAN_FIVE_PER_WEEK"
+
+        case .stability: "STABILITY"
+        case .connection: "CONNECTEDNESS"
+        case .growth: "GROWTH"
+        case .vitality: "VITALITY"
+
+        case .once: "ONE_TO_TWO_PER_WEEK"
+        case .twoToThree: "THREE_TO_FOUR_PER_WEEK"
+        case .fourOrMore: "MORE_THAN_FIVE_PER_WEEK"
+        case .notSure: "UNKNOWN"
+        }
+    }
+}
diff --git a/Projects/Domain/Sources/Entity/Enum/OnboardingType.swift b/Projects/Domain/Sources/Entity/Enum/OnboardingType.swift
new file mode 100644
index 00000000..e2560ef6
--- /dev/null
+++ b/Projects/Domain/Sources/Entity/Enum/OnboardingType.swift
@@ -0,0 +1,22 @@
+//
+//  OnboardingType.swift
+//  Domain
+//
+//  Created by 최정인 on 7/15/25.
+//
+
+public enum OnboardingType: CaseIterable {
+    case time
+    case frequency
+    case feeling
+    case outdoor
+
+    var key: String {
+        switch self {
+        case .time: "timeSlot"
+        case .frequency: "realOutingFrequency"
+        case .feeling: "emotionType"
+        case .outdoor: "targetOutingFrequency"
+        }
+    }
+}
diff --git a/Projects/Domain/Sources/Entities/Enum/TermsType.swift b/Projects/Domain/Sources/Entity/Enum/TermsType.swift
similarity index 100%
rename from Projects/Domain/Sources/Entities/Enum/TermsType.swift
rename to Projects/Domain/Sources/Entity/Enum/TermsType.swift
diff --git a/Projects/Domain/Sources/Entities/Enum/UserState.swift b/Projects/Domain/Sources/Entity/Enum/UserState.swift
similarity index 100%
rename from Projects/Domain/Sources/Entities/Enum/UserState.swift
rename to Projects/Domain/Sources/Entity/Enum/UserState.swift
diff --git a/Projects/Domain/Sources/Entity/RecommendedRoutineEntity.swift b/Projects/Domain/Sources/Entity/RecommendedRoutineEntity.swift
new file mode 100644
index 00000000..db04a334
--- /dev/null
+++ b/Projects/Domain/Sources/Entity/RecommendedRoutineEntity.swift
@@ -0,0 +1,22 @@
+//
+//  RecommendedRoutineEntity.swift
+//  Domain
+//
+//  Created by 최정인 on 7/15/25.
+//
+
+public struct RecommendedRoutineEntity {
+    public let id: Int
+    public let title: String
+    public let description: String
+
+    public init(
+        id: Int,
+        title: String,
+        description: String
+    ) {
+        self.id = id
+        self.title = title
+        self.description = description
+    }
+}
diff --git a/Projects/Domain/Sources/Entities/UserEntity.swift b/Projects/Domain/Sources/Entity/UserEntity.swift
similarity index 100%
rename from Projects/Domain/Sources/Entities/UserEntity.swift
rename to Projects/Domain/Sources/Entity/UserEntity.swift
diff --git a/Projects/Domain/Sources/Protocols/Repository/AuthRepositoryProtocol.swift b/Projects/Domain/Sources/Protocol/Repository/AuthRepositoryProtocol.swift
similarity index 82%
rename from Projects/Domain/Sources/Protocols/Repository/AuthRepositoryProtocol.swift
rename to Projects/Domain/Sources/Protocol/Repository/AuthRepositoryProtocol.swift
index f83abbea..f0eaba41 100644
--- a/Projects/Domain/Sources/Protocols/Repository/AuthRepositoryProtocol.swift
+++ b/Projects/Domain/Sources/Protocol/Repository/AuthRepositoryProtocol.swift
@@ -7,13 +7,15 @@
 
 public protocol AuthRepositoryProtocol {
     /// 카카오 소셜 로그인을 진행합니다.
-    func kakaoLogin() async throws
+    /// - Returns: 로그인에 성공한 사용자의 정보
+    func kakaoLogin() async throws -> UserEntity
 
     /// Apple 소셜 로그인을 진행합니다.
     /// - Parameters:
     ///   - nickname: Apple 계정의 이름입니다. 첫 로그인 시에만 전달되며 이후에는 UserDefaults에 저장된 값을 사용합니다.
     ///   - authToken: Apple로부터 발급받은 authorization token 값입니다.
-    func appleLogin(nickname: String?, authToken: String) async throws
+    /// - Returns: 로그인에 성공한 사용자의 정보
+    func appleLogin(nickname: String?, authToken: String) async throws -> UserEntity
 
     /// 동의한 약관들에 대한 정보를 보냅니다.
     func submitAgreement(agreements: [TermsType: Bool]) async throws
diff --git a/Projects/Domain/Sources/Protocol/Repository/OnboardingRepositoryProtocol.swift b/Projects/Domain/Sources/Protocol/Repository/OnboardingRepositoryProtocol.swift
new file mode 100644
index 00000000..b0723e80
--- /dev/null
+++ b/Projects/Domain/Sources/Protocol/Repository/OnboardingRepositoryProtocol.swift
@@ -0,0 +1,17 @@
+//
+//  OnboardingRepositoryProtocol.swift
+//  Domain
+//
+//  Created by 최정인 on 7/15/25.
+//
+
+public protocol OnboardingRepositoryProtocol {
+    /// 선택한 온보딩 결과를 저장하고, 추천 루틴을 받습니다.
+    /// - Parameter onboardingChoices: 선택한 온보딩 항목 Dictionary
+    /// - Returns: 온보딩 결과를 바탕으로 받은 추천루틴 목록
+    func registerOnboarding(onboardingChoices: [String: String]) async throws -> [RecommendedRoutineEntity]
+
+    /// 선택한 추천 루틴을 등록합니다.
+    /// - Parameter selectedRoutines: 선택한 추천 루틴 ID 목록
+    func registerRecommendedRoutines(selectedRoutines: [Int]) async throws
+}
diff --git a/Projects/Domain/Sources/Protocols/UseCase/LoginUseCaseProtocol.swift b/Projects/Domain/Sources/Protocol/UseCase/LoginUseCaseProtocol.swift
similarity index 92%
rename from Projects/Domain/Sources/Protocols/UseCase/LoginUseCaseProtocol.swift
rename to Projects/Domain/Sources/Protocol/UseCase/LoginUseCaseProtocol.swift
index e5b39531..a73824f2 100644
--- a/Projects/Domain/Sources/Protocols/UseCase/LoginUseCaseProtocol.swift
+++ b/Projects/Domain/Sources/Protocol/UseCase/LoginUseCaseProtocol.swift
@@ -7,13 +7,13 @@
 
 public protocol LoginUseCaseProtocol {
     /// 카카오 소셜 로그인을 진행합니다.
-    func kakaoLogin() async throws
+    func kakaoLogin() async throws -> UserState
 
     /// Apple 소셜 로그인을 진행합니다.
     /// - Parameters:
     ///   - nickname: Apple 계정의 이름입니다. 첫 로그인 시에만 전달되며 이후에는 UserDefaults에 저장된 값을 사용합니다.
     ///   - authToken: Apple로부터 발급받은 authorization token 값입니다.
-    func appleLogin(nickname: String?, authToken: String) async throws
+    func appleLogin(nickname: String?, authToken: String) async throws -> UserState
 
     /// 동의한 약관들에 대한 정보를 보냅니다.
     /// - Parameter agreements: 각 약관(TermsType)별 동의 여부를 나타내는 딕셔너리 값입니다.
diff --git a/Projects/Domain/Sources/Protocols/UseCase/LogoutUseCaseProtocol.swift b/Projects/Domain/Sources/Protocol/UseCase/LogoutUseCaseProtocol.swift
similarity index 100%
rename from Projects/Domain/Sources/Protocols/UseCase/LogoutUseCaseProtocol.swift
rename to Projects/Domain/Sources/Protocol/UseCase/LogoutUseCaseProtocol.swift
diff --git a/Projects/Domain/Sources/Protocol/UseCase/OnboardingUseCaseProtocol.swift b/Projects/Domain/Sources/Protocol/UseCase/OnboardingUseCaseProtocol.swift
new file mode 100644
index 00000000..7019a28e
--- /dev/null
+++ b/Projects/Domain/Sources/Protocol/UseCase/OnboardingUseCaseProtocol.swift
@@ -0,0 +1,17 @@
+//
+//  OnboardingUseCaseProtocol.swift
+//  Domain
+//
+//  Created by 최정인 on 7/15/25.
+//
+
+public protocol OnboardingUseCaseProtocol {
+    /// 선택한 온보딩 결과를 저장하고, 추천 루틴을 받습니다.
+    /// - Parameter onboardingChoices: 선택한 온보딩 항목
+    /// - Returns: 온보딩 결과를 바탕으로 받은 추천루틴 목록
+    func registerOnboarding(onboardingChoices: [OnboardingChoiceType]) async throws -> [RecommendedRoutineEntity]
+
+    /// 선택한 추천 루틴을 등록합니다.
+    /// - Parameter selectedRoutines: 선택한 추천 루틴 ID 목록
+    func registerRecommendedRoutines(selectedRoutines: [Int]) async throws
+}
diff --git a/Projects/Domain/Sources/Protocols/UseCase/WithdrawUseCaseProtocol.swift b/Projects/Domain/Sources/Protocol/UseCase/WithdrawUseCaseProtocol.swift
similarity index 100%
rename from Projects/Domain/Sources/Protocols/UseCase/WithdrawUseCaseProtocol.swift
rename to Projects/Domain/Sources/Protocol/UseCase/WithdrawUseCaseProtocol.swift
diff --git a/Projects/Domain/Sources/UseCases/Auth/LoginUseCase.swift b/Projects/Domain/Sources/UseCase/Auth/LoginUseCase.swift
similarity index 65%
rename from Projects/Domain/Sources/UseCases/Auth/LoginUseCase.swift
rename to Projects/Domain/Sources/UseCase/Auth/LoginUseCase.swift
index 362fe6c5..578351c5 100644
--- a/Projects/Domain/Sources/UseCases/Auth/LoginUseCase.swift
+++ b/Projects/Domain/Sources/UseCase/Auth/LoginUseCase.swift
@@ -14,12 +14,14 @@ public final class LoginUseCase: LoginUseCaseProtocol {
         self.authRepository = authRepository
     }
 
-    public func kakaoLogin() async throws {
-        try await authRepository.kakaoLogin()
+    public func kakaoLogin() async throws -> UserState {
+        let user = try await authRepository.kakaoLogin()
+        return user.userState
     }
 
-    public func appleLogin(nickname: String?, authToken: String) async throws {
-        try await authRepository.appleLogin(nickname: nickname, authToken: authToken)
+    public func appleLogin(nickname: String?, authToken: String) async throws -> UserState {
+        let user = try await authRepository.appleLogin(nickname: nickname, authToken: authToken)
+        return user.userState
     }
 
     public func sumbitAgreement(agreements: [TermsType: Bool]) async throws {
diff --git a/Projects/Domain/Sources/UseCases/Auth/LogoutUseCase.swift b/Projects/Domain/Sources/UseCase/Auth/LogoutUseCase.swift
similarity index 100%
rename from Projects/Domain/Sources/UseCases/Auth/LogoutUseCase.swift
rename to Projects/Domain/Sources/UseCase/Auth/LogoutUseCase.swift
diff --git a/Projects/Domain/Sources/UseCases/Auth/WithdrawUseCase.swift b/Projects/Domain/Sources/UseCase/Auth/WithdrawUseCase.swift
similarity index 100%
rename from Projects/Domain/Sources/UseCases/Auth/WithdrawUseCase.swift
rename to Projects/Domain/Sources/UseCase/Auth/WithdrawUseCase.swift
diff --git a/Projects/Domain/Sources/UseCase/Onboarding/OnboardingUseCase.swift b/Projects/Domain/Sources/UseCase/Onboarding/OnboardingUseCase.swift
new file mode 100644
index 00000000..0831e320
--- /dev/null
+++ b/Projects/Domain/Sources/UseCase/Onboarding/OnboardingUseCase.swift
@@ -0,0 +1,37 @@
+//
+//  OnboardingUseCase.swift
+//  Domain
+//
+//  Created by 최정인 on 7/15/25.
+//
+
+import Foundation
+
+public final class OnboardingUseCase: OnboardingUseCaseProtocol {
+    private let onboardingRepository: OnboardingRepositoryProtocol
+
+    public init(onboardingRepository: OnboardingRepositoryProtocol) {
+        self.onboardingRepository = onboardingRepository
+    }
+
+    public func registerOnboarding(onboardingChoices: [OnboardingChoiceType]) async throws -> [RecommendedRoutineEntity] {
+        let choices = convertToDictionary(onboardingChoices: onboardingChoices)
+        let recommendedRoutines = try await onboardingRepository.registerOnboarding(onboardingChoices: choices)
+        return recommendedRoutines
+    }
+
+    public func registerRecommendedRoutines(selectedRoutines: [Int]) async throws {
+        try await onboardingRepository.registerRecommendedRoutines(selectedRoutines: selectedRoutines)
+    }
+
+    private func convertToDictionary(onboardingChoices: [OnboardingChoiceType]) -> [String: String] {
+        var result: [String: String] = [:]
+        let onboardingTypes: [OnboardingType] = [.time, .frequency, .feeling, .outdoor]
+        for type in onboardingTypes {
+            guard let choice = onboardingChoices.first(where: { $0.onboardingType == type })
+            else { break }
+            result[choice.onboardingType.key] = choice.value
+        }
+        return result
+    }
+}
diff --git a/Projects/DataSource/Sources/DTO/BaseResponseDTO.swift b/Projects/NetworkService/Sources/BaseResponse.swift
similarity index 52%
rename from Projects/DataSource/Sources/DTO/BaseResponseDTO.swift
rename to Projects/NetworkService/Sources/BaseResponse.swift
index 0f123ffb..884f7c9e 100644
--- a/Projects/DataSource/Sources/DTO/BaseResponseDTO.swift
+++ b/Projects/NetworkService/Sources/BaseResponse.swift
@@ -1,14 +1,12 @@
 //
-//  BaseResponseDTO.swift
+//  BaseResponse.swift
 //  DataSource
 //
 //  Created by 최정인 on 6/23/25.
 //
 
-struct BaseResponseDTO<T: Decodable>: Decodable {
+struct BaseResponse<T: Decodable>: Decodable {
     let code: String
     let data: T?
     let message: String
 }
-
-struct EmptyResponse: Decodable {}
diff --git a/Projects/NetworkService/Sources/Extensions/Endpoint+.swift b/Projects/NetworkService/Sources/Extension/Endpoint+.swift
similarity index 100%
rename from Projects/NetworkService/Sources/Extensions/Endpoint+.swift
rename to Projects/NetworkService/Sources/Extension/Endpoint+.swift
diff --git a/Projects/NetworkService/Sources/Extensions/URLRequest+.swift b/Projects/NetworkService/Sources/Extension/URLRequest+.swift
similarity index 100%
rename from Projects/NetworkService/Sources/Extensions/URLRequest+.swift
rename to Projects/NetworkService/Sources/Extension/URLRequest+.swift
diff --git a/Projects/NetworkService/Sources/Extensions/URLSession+.swift b/Projects/NetworkService/Sources/Extension/URLSession+.swift
similarity index 100%
rename from Projects/NetworkService/Sources/Extensions/URLSession+.swift
rename to Projects/NetworkService/Sources/Extension/URLSession+.swift
diff --git a/Projects/NetworkService/Sources/NetworkService.swift b/Projects/NetworkService/Sources/NetworkService.swift
index 084f512b..953be80d 100644
--- a/Projects/NetworkService/Sources/NetworkService.swift
+++ b/Projects/NetworkService/Sources/NetworkService.swift
@@ -17,27 +17,31 @@ public final class NetworkService: NetworkServiceProtocol {
         self.networkProvider = networkProvider
     }
 
-    public func request<T: Decodable>(endpoint: Endpoint, type: T.Type) async throws -> T {
+    public func request<T: Decodable>(endpoint: Endpoint, type: T.Type) async throws -> T? {
         let request = try endpoint.makeURLRequest()
         let (data, response) = try await networkProvider.data(for: request)
 
-        guard let httpResponse = response as? HTTPURLResponse else {
-            throw NetworkError.invalidResponse
-        }
+        guard let httpResponse = response as? HTTPURLResponse
+        else { throw NetworkError.invalidResponse }
 
         guard 200..<300 ~= httpResponse.statusCode else {
             BitnagilLogger.log(logType: .error, message: "응답 코드: \(httpResponse.statusCode)")
             throw NetworkError.invalidStatusCode(statusCode: httpResponse.statusCode)
         }
 
-        guard !data.isEmpty else {
-            throw NetworkError.emptyData
-        }
+        guard !data.isEmpty
+        else { throw NetworkError.emptyData }
 
-        guard let responseDTO = try? decoder.decode(T.self, from: data) else {
+        do {
+            let baseResponse = try decoder.decode(BaseResponse<T>.self, from: data)
+            BitnagilLogger.log(logType: .info, message: "Server Message: \(baseResponse.message)")
+
+            guard let responseDTO = baseResponse.data
+            else { return nil }
+            
+            return responseDTO
+        } catch {
             throw NetworkError.decodingError
         }
-
-        return responseDTO
     }
 }
diff --git a/Projects/Presentation/Sources/Common/Components/PrimaryButton.swift b/Projects/Presentation/Sources/Common/Component/PrimaryButton.swift
similarity index 100%
rename from Projects/Presentation/Sources/Common/Components/PrimaryButton.swift
rename to Projects/Presentation/Sources/Common/Component/PrimaryButton.swift
diff --git a/Projects/Presentation/Sources/Common/DesignSystem/Font/BitnagilFont.swift b/Projects/Presentation/Sources/Common/DesignSystem/Font/BitnagilFont.swift
index f153cf36..96bf5a53 100644
--- a/Projects/Presentation/Sources/Common/DesignSystem/Font/BitnagilFont.swift
+++ b/Projects/Presentation/Sources/Common/DesignSystem/Font/BitnagilFont.swift
@@ -16,6 +16,21 @@ struct BitnagilFont {
         self.weight = weight
     }
 
+    init(fontSize: CGFloat,
+         lineHeight: CGFloat,
+         letterSpacing: CGFloat = 0,
+         underline: Bool = false,
+         weight: FontWeight
+    ) {
+        let attributes = FontAttributes(
+            fontSize: fontSize,
+            lineHeight: lineHeight,
+            letterSpacing: letterSpacing,
+            underline: underline)
+        self.style = .custom(fontAttribute: attributes)
+        self.weight = weight
+    }
+
     var font: UIFont {
         guard let font = UIFont(name: weight.fontName, size: style.fontAttributes.fontSize) else {
             return UIFont.systemFont(ofSize: style.fontAttributes.fontSize)
diff --git a/Projects/Presentation/Sources/Common/DesignSystem/Font/FontStyle.swift b/Projects/Presentation/Sources/Common/DesignSystem/Font/FontStyle.swift
index 20707539..3fa8ce0c 100644
--- a/Projects/Presentation/Sources/Common/DesignSystem/Font/FontStyle.swift
+++ b/Projects/Presentation/Sources/Common/DesignSystem/Font/FontStyle.swift
@@ -25,6 +25,8 @@ enum FontStyle {
     case button1
     case button2
 
+    case custom(fontAttribute: FontAttributes)
+
     var fontAttributes: FontAttributes {
         switch self {
         case .headline1: FontAttributes(fontSize: 26, lineHeight: 38, letterSpacing: -0.5)
@@ -45,6 +47,8 @@ enum FontStyle {
 
         case .button1: FontAttributes(fontSize: 16, lineHeight: 24)
         case .button2: FontAttributes(fontSize: 14, lineHeight: 20)
+
+        case .custom(let fontAttribute): fontAttribute
         }
     }
 }
diff --git a/Projects/Presentation/Sources/Common/Extensions/NSAttributedString+.swift b/Projects/Presentation/Sources/Common/Extension/NSAttributedString+.swift
similarity index 100%
rename from Projects/Presentation/Sources/Common/Extensions/NSAttributedString+.swift
rename to Projects/Presentation/Sources/Common/Extension/NSAttributedString+.swift
diff --git a/Projects/Presentation/Sources/Common/Extensions/UIViewController+.swift b/Projects/Presentation/Sources/Common/Extension/UIViewController+.swift
similarity index 96%
rename from Projects/Presentation/Sources/Common/Extensions/UIViewController+.swift
rename to Projects/Presentation/Sources/Common/Extension/UIViewController+.swift
index e15844e2..b38f56cd 100644
--- a/Projects/Presentation/Sources/Common/Extensions/UIViewController+.swift
+++ b/Projects/Presentation/Sources/Common/Extension/UIViewController+.swift
@@ -62,7 +62,8 @@ extension UIViewController {
     }
 
     @objc private func popTwoViewControllers() {
-        guard let navigationController = navigationController else { return }
+        guard let navigationController = navigationController
+        else { return }
         let viewControllers = navigationController.viewControllers
 
         guard viewControllers.count >= 3 else {
diff --git a/Projects/Presentation/Sources/Common/PresentationDependencyAssembler.swift b/Projects/Presentation/Sources/Common/PresentationDependencyAssembler.swift
index 6cc4b314..ca239d1b 100644
--- a/Projects/Presentation/Sources/Common/PresentationDependencyAssembler.swift
+++ b/Projects/Presentation/Sources/Common/PresentationDependencyAssembler.swift
@@ -23,14 +23,18 @@ public struct PresentationDependencyAssembler: DependencyAssemblerProtocol {
             return HomeViewModel()
         }
 
-        DIContainer.shared.register(type: OnboardingViewModel.self) { _ in
-            return OnboardingViewModel()
-        }
-
         DIContainer.shared.register(type: LoginViewModel.self) { container in
             guard let loginUseCase = container.resolve(type: LoginUseCaseProtocol.self)
-            else { return }
+            else { fatalError("loginUseCase 의존성이 등록되지 않았습니다.") }
+
             return LoginViewModel(loginUseCase: loginUseCase)
         }
+
+        DIContainer.shared.register(type: OnboardingViewModel.self) { container in
+            guard let onboardingUseCase = container.resolve(type: OnboardingUseCaseProtocol.self)
+            else { fatalError("onboardingUseCase 의존성이 등록되지 않았습니다.") }
+
+            return OnboardingViewModel(onboardingUseCase: onboardingUseCase)
+        }
     }
 }
diff --git a/Projects/Presentation/Sources/Home/HomeViewController.swift b/Projects/Presentation/Sources/Home/HomeViewController.swift
index ce1a82d7..dea0fd89 100644
--- a/Projects/Presentation/Sources/Home/HomeViewController.swift
+++ b/Projects/Presentation/Sources/Home/HomeViewController.swift
@@ -12,12 +12,12 @@ import SnapKit
 import Then
 import Shared
 
-public final class HomeViewController: BaseViewController<HomeViewModel> {
+final class HomeViewController: BaseViewController<HomeViewModel> {
     private var cancellables: Set<AnyCancellable>
 
     private let label = UILabel()
 
-    public override init(viewModel: HomeViewModel) {
+    override init(viewModel: HomeViewModel) {
         cancellables = []
         super.init(viewModel: viewModel)
     }
@@ -26,7 +26,7 @@ public final class HomeViewController: BaseViewController<HomeViewModel> {
         fatalError("init(coder:) has not been implemented")
     }
 
-    public override func viewDidLoad() {
+    override func viewDidLoad() {
         super.viewDidLoad()
     }
 
diff --git a/Projects/Presentation/Sources/Home/ViewModel/HomeViewModel.swift b/Projects/Presentation/Sources/Home/ViewModel/HomeViewModel.swift
index b95403f2..2aaf2c4c 100644
--- a/Projects/Presentation/Sources/Home/ViewModel/HomeViewModel.swift
+++ b/Projects/Presentation/Sources/Home/ViewModel/HomeViewModel.swift
@@ -8,16 +8,16 @@
 import Combine
 import Domain
 
-public final class HomeViewModel: ViewModel {
-    public enum Input { }
+final class HomeViewModel: ViewModel {
+    enum Input { }
 
-    public struct Output { }
+    struct Output { }
 
     private(set) var output: Output
 
-    public init() {
+    init() {
         self.output = Output()
     }
 
-    public func action(input: Input) { }
+    func action(input: Input) { }
 }
diff --git a/Projects/Presentation/Sources/Login/View/Components/SocialLoginButton.swift b/Projects/Presentation/Sources/Login/View/Component/SocialLoginButton.swift
similarity index 100%
rename from Projects/Presentation/Sources/Login/View/Components/SocialLoginButton.swift
rename to Projects/Presentation/Sources/Login/View/Component/SocialLoginButton.swift
diff --git a/Projects/Presentation/Sources/Login/View/Components/TermsAgreementItemView.swift b/Projects/Presentation/Sources/Login/View/Component/TermsAgreementItemView.swift
similarity index 100%
rename from Projects/Presentation/Sources/Login/View/Components/TermsAgreementItemView.swift
rename to Projects/Presentation/Sources/Login/View/Component/TermsAgreementItemView.swift
diff --git a/Projects/Presentation/Sources/Login/View/Components/TotalAgreementButton.swift b/Projects/Presentation/Sources/Login/View/Component/TotalAgreementButton.swift
similarity index 100%
rename from Projects/Presentation/Sources/Login/View/Components/TotalAgreementButton.swift
rename to Projects/Presentation/Sources/Login/View/Component/TotalAgreementButton.swift
diff --git a/Projects/Presentation/Sources/Login/View/LoginView.swift b/Projects/Presentation/Sources/Login/View/LoginView.swift
index ded5500e..36873888 100644
--- a/Projects/Presentation/Sources/Login/View/LoginView.swift
+++ b/Projects/Presentation/Sources/Login/View/LoginView.swift
@@ -12,7 +12,7 @@ import Shared
 import SnapKit
 import Then
 
-public final class LoginView: BaseViewController<LoginViewModel> {
+final class LoginView: BaseViewController<LoginViewModel> {
 
     private enum Layout {
         static let horizontalMargin: CGFloat = 20
@@ -28,7 +28,7 @@ public final class LoginView: BaseViewController<LoginViewModel> {
     private let appleLoginButton = SocialLoginButton(socialType: .apple)
     private var cancellables: Set<AnyCancellable>
 
-    public override init(viewModel: LoginViewModel) {
+    override init(viewModel: LoginViewModel) {
         cancellables = []
         super.init(viewModel: viewModel)
     }
@@ -37,11 +37,11 @@ public final class LoginView: BaseViewController<LoginViewModel> {
         fatalError("init(coder:) has not been implemented")
     }
 
-    public override func viewDidLoad() {
+    override func viewDidLoad() {
         super.viewDidLoad()
     }
 
-    public override func viewWillAppear(_ animated: Bool) {
+    override func viewWillAppear(_ animated: Bool) {
         super.viewWillAppear(animated)
         configureNavigationBar(navigationStyle: .hidden)
     }
@@ -93,15 +93,24 @@ public final class LoginView: BaseViewController<LoginViewModel> {
     override func bind() {
         viewModel.output.loginResultPublisher
             .receive(on: DispatchQueue.main)
-            .sink { [weak self] loginResult in
+            .sink { [weak self] userState in
                 guard let self else { return }
-                if loginResult {
-                    BitnagilLogger.log(logType: .debug, message: "서버 로그인 성공")
+                guard let userState else {
+                    // TODO: 로그인 실패 시, 에러 처리
+                    BitnagilLogger.log(logType: .error, message: "서버 로그인 실패")
+                    return
+                }
+
+                BitnagilLogger.log(logType: .info, message: "서버 로그인 성공")
+                if userState == .guest {
                     let agreementView = TermsAgreementView(viewModel: self.viewModel)
                     self.navigationController?.pushViewController(agreementView, animated: true)
                 } else {
-                    // TODO: 로그인 실패 시, 에러 처리
-                    BitnagilLogger.log(logType: .error, message: "서버 로그인 실패")
+                    guard let onboardingViewModel = DIContainer.shared.resolve(type: OnboardingViewModel.self) else {
+                        fatalError("onboardingViewModel 의존성이 등록되지 않았습니다.")
+                    }
+                    let onboardingView = OnboardingView(viewModel: onboardingViewModel, onboarding: .time)
+                    self.navigationController?.pushViewController(onboardingView, animated: true)
                 }
             }
             .store(in: &cancellables)
@@ -121,7 +130,7 @@ public final class LoginView: BaseViewController<LoginViewModel> {
 
 // MARK: - ASAuthorizationControllerDelegate
 extension LoginView: ASAuthorizationControllerDelegate {
-    public func authorizationController(
+    func authorizationController(
         controller: ASAuthorizationController,
         didCompleteWithAuthorization authorization: ASAuthorization
     ) {
@@ -144,14 +153,14 @@ extension LoginView: ASAuthorizationControllerDelegate {
         self.viewModel.action(input: .appleLogin(nickname: nickname, authToken: authToken))
     }
 
-    public func authorizationController(controller: ASAuthorizationController, didCompleteWithError error: any Error) {
+    func authorizationController(controller: ASAuthorizationController, didCompleteWithError error: any Error) {
         BitnagilLogger.log(logType: .error, message: "Apple 로그인 실패")
     }
 }
 
 // MARK: - ASAuthorizationControllerPresentationContextProviding
 extension LoginView: ASAuthorizationControllerPresentationContextProviding {
-    public func presentationAnchor(for controller: ASAuthorizationController) -> ASPresentationAnchor {
+    func presentationAnchor(for controller: ASAuthorizationController) -> ASPresentationAnchor {
         return view.window ?? UIWindow()
     }
 }
diff --git a/Projects/Presentation/Sources/Login/View/TermsAgreementView.swift b/Projects/Presentation/Sources/Login/View/TermsAgreementView.swift
index 243e6b1a..35e17237 100644
--- a/Projects/Presentation/Sources/Login/View/TermsAgreementView.swift
+++ b/Projects/Presentation/Sources/Login/View/TermsAgreementView.swift
@@ -13,7 +13,7 @@ import SnapKit
 import Then
 import SafariServices
 
-public final class TermsAgreementView: BaseViewController<LoginViewModel> {
+final class TermsAgreementView: BaseViewController<LoginViewModel> {
 
     private enum Layout {
         static let horizontalMargin: CGFloat = 20
@@ -32,7 +32,7 @@ public final class TermsAgreementView: BaseViewController<LoginViewModel> {
     private let startButton = PrimaryButton(buttonState: .disabled, buttonTitle: "시작하기")
     private var cancellables: Set<AnyCancellable>
 
-    public override init(viewModel: LoginViewModel) {
+    override init(viewModel: LoginViewModel) {
         cancellables = []
         super.init(viewModel: viewModel)
     }
@@ -41,11 +41,11 @@ public final class TermsAgreementView: BaseViewController<LoginViewModel> {
         fatalError("init(coder:) has not been implemented")
     }
 
-    public override func viewDidLoad() {
+    override func viewDidLoad() {
         super.viewDidLoad()
     }
 
-    public override func viewWillAppear(_ animated: Bool) {
+    override func viewWillAppear(_ animated: Bool) {
         super.viewWillAppear(animated)
         configureNavigationBar(navigationStyle: .withBackButton(title: "약관 동의"))
     }
diff --git a/Projects/Presentation/Sources/Login/ViewModel/LoginViewModel.swift b/Projects/Presentation/Sources/Login/ViewModel/LoginViewModel.swift
index a6f40c57..54a6074a 100644
--- a/Projects/Presentation/Sources/Login/ViewModel/LoginViewModel.swift
+++ b/Projects/Presentation/Sources/Login/ViewModel/LoginViewModel.swift
@@ -9,8 +9,8 @@ import Combine
 import Domain
 import Shared
 
-public final class LoginViewModel: ViewModel {
-    public enum Input {
+final class LoginViewModel: ViewModel {
+    enum Input {
         case kakaoLogin
         case appleLogin(nickname: String?, authToken: String)
         case toggleAgreement(termsType: TermsType)
@@ -18,20 +18,20 @@ public final class LoginViewModel: ViewModel {
         case submitAgreement
     }
 
-    public struct Output {
-        let loginResultPublisher: AnyPublisher<Bool, Never>
+    struct Output {
+        let loginResultPublisher: AnyPublisher<UserState?, Never>
         let agreementStatePublisher: AnyPublisher<TermsAgreementState, Never>
         let agreementResultPublisher: AnyPublisher<Bool, Never>
     }
 
     private(set) var output: Output
-    private let loginResultSubject = PassthroughSubject<Bool, Never>()
+    private let loginResultSubject = PassthroughSubject<UserState?, Never>()
     private let agreementStateSubject = CurrentValueSubject<TermsAgreementState, Never>(TermsAgreementState())
     private let agreementResultSubject = PassthroughSubject<Bool, Never>()
 
     private let loginUseCase: LoginUseCaseProtocol
     private var userInformation: (nickname: String?, token: String)?
-    public init(loginUseCase: LoginUseCaseProtocol) {
+    init(loginUseCase: LoginUseCaseProtocol) {
         self.loginUseCase = loginUseCase
         self.output = Output(
             loginResultPublisher: loginResultSubject.eraseToAnyPublisher(),
@@ -40,27 +40,27 @@ public final class LoginViewModel: ViewModel {
         )
     }
 
-    public func action(input: Input) {
+    func action(input: Input) {
         switch input {
         case .kakaoLogin:
             Task {
                 do {
-                    try await loginUseCase.kakaoLogin()
-                    loginResultSubject.send(true)
+                    let user = try await loginUseCase.kakaoLogin()
+                    loginResultSubject.send(user)
                 } catch {
                     BitnagilLogger.log(logType: .error, message: "\(error.localizedDescription)")
-                    loginResultSubject.send(false)
+                    loginResultSubject.send(nil)
                 }
             }
 
         case .appleLogin(let nickname, let authToken):
             Task {
                 do {
-                    try await loginUseCase.appleLogin(nickname: nickname, authToken: authToken)
-                    loginResultSubject.send(true)
+                    let user = try await loginUseCase.appleLogin(nickname: nickname, authToken: authToken)
+                    loginResultSubject.send(user)
                 } catch {
                     BitnagilLogger.log(logType: .error, message: "\(error.localizedDescription)")
-                    loginResultSubject.send(false)
+                    loginResultSubject.send(nil)
                 }
             }
 
diff --git a/Projects/Presentation/Sources/Onboarding/Model/OnboardingChoiceType.swift b/Projects/Presentation/Sources/Onboarding/Model/OnboardingChoiceType.swift
index 3c476039..65fae71c 100644
--- a/Projects/Presentation/Sources/Onboarding/Model/OnboardingChoiceType.swift
+++ b/Projects/Presentation/Sources/Onboarding/Model/OnboardingChoiceType.swift
@@ -5,48 +5,9 @@
 //  Created by 최정인 on 7/9/25.
 //
 
-enum OnboardingChoiceType: CaseIterable, OnboardingChoiceProtocol {
-    case morningTime
-    case eveningTime
-    case allTime
+import Domain
 
-    case never
-    case rarely
-    case sometimes
-    case often
-
-    case stability
-    case connection
-    case growth
-    case vitality
-
-    case once
-    case twoToThree
-    case fourOrMore
-    case notSure
-
-    var onboardingType: OnboardingType {
-        switch self {
-        case .morningTime: .time
-        case .eveningTime: .time
-        case .allTime: .time
-
-        case .never: .frequency
-        case .rarely: .frequency
-        case .sometimes: .frequency
-        case .often: .frequency
-
-        case .stability: .feeling
-        case .connection: .feeling
-        case .growth: .feeling
-        case .vitality: .feeling
-
-        case .once: .outdoorGoal
-        case .twoToThree: .outdoorGoal
-        case .fourOrMore: .outdoorGoal
-        case .notSure: .outdoorGoal
-        }
-    }
+extension OnboardingChoiceType: OnboardingChoiceProtocol {
 
     var mainTitle: String {
         switch self {
diff --git a/Projects/Presentation/Sources/Onboarding/Model/OnboardingType.swift b/Projects/Presentation/Sources/Onboarding/Model/OnboardingType.swift
index be7b99b9..60302c08 100644
--- a/Projects/Presentation/Sources/Onboarding/Model/OnboardingType.swift
+++ b/Projects/Presentation/Sources/Onboarding/Model/OnboardingType.swift
@@ -5,18 +5,16 @@
 //  Created by 최정인 on 7/11/25.
 //
 
-enum OnboardingType: CaseIterable {
-    case time
-    case frequency
-    case feeling
-    case outdoorGoal
+import Domain
 
+extension OnboardingType {
+    
     var step: Int {
         switch self {
         case .time: 1
         case .frequency: 2
         case .feeling: 3
-        case .outdoorGoal: 4
+        case .outdoor: 4
         }
     }
 
@@ -25,7 +23,7 @@ enum OnboardingType: CaseIterable {
         case .time: "어떤 시간대를\n더 잘 보내고 싶나요?"
         case .frequency: "최근 얼마나 자주\n바깥 바람을 쐬시나요?"
         case .feeling: "요즘 어떤 회복이\n필요하신가요?"
-        case .outdoorGoal: "작지만 의미 있는 변화를 위해,\n일주일에 몇 번 외출하고 싶으신가요?"
+        case .outdoor: "작지만 의미 있는 변화를 위해,\n일주일에 몇 번 외출하고 싶으신가요?"
         }
     }
 
@@ -34,7 +32,7 @@ enum OnboardingType: CaseIterable {
         case .time: nil
         case .frequency: nil
         case .feeling: "여러 개 선택할 수 있어요!"
-        case .outdoorGoal: "무리하지 않는 선에서, 나만의 외출 목표를 정해보세요."
+        case .outdoor: "무리하지 않는 선에서, 나만의 외출 목표를 정해보세요."
         }
     }
 
@@ -57,7 +55,7 @@ enum OnboardingType: CaseIterable {
                     OnboardingChoiceType.growth,
                     OnboardingChoiceType.vitality]
 
-        case .outdoorGoal:
+        case .outdoor:
             return [OnboardingChoiceType.once,
                     OnboardingChoiceType.twoToThree,
                     OnboardingChoiceType.fourOrMore,
diff --git a/Projects/Presentation/Sources/Onboarding/Model/RecommendedRoutine.swift b/Projects/Presentation/Sources/Onboarding/Model/RecommendedRoutine.swift
index 671e2158..15c15094 100644
--- a/Projects/Presentation/Sources/Onboarding/Model/RecommendedRoutine.swift
+++ b/Projects/Presentation/Sources/Onboarding/Model/RecommendedRoutine.swift
@@ -5,9 +5,19 @@
 //  Created by 최정인 on 7/11/25.
 //
 
-// TODO: 추후 루틴에 대한 값이 명확해진다면 수정할 가능성이 높습니다. (현재는 View만을 위한 모델)
-struct RecommendedRoutine: OnboardingChoiceProtocol, Hashable {
+import Domain
+
+public struct RecommendedRoutine: OnboardingChoiceProtocol, Hashable {
     let id: Int
     let mainTitle: String
     let subTitle: String?
 }
+
+extension RecommendedRoutineEntity {
+    func toRecommendedRoutine() -> RecommendedRoutine {
+        return RecommendedRoutine(
+            id: id,
+            mainTitle: title,
+            subTitle: description)
+    }
+}
diff --git a/Projects/Presentation/Sources/Onboarding/View/Components/GradientProgressView.swift b/Projects/Presentation/Sources/Onboarding/View/Component/GradientProgressView.swift
similarity index 100%
rename from Projects/Presentation/Sources/Onboarding/View/Components/GradientProgressView.swift
rename to Projects/Presentation/Sources/Onboarding/View/Component/GradientProgressView.swift
diff --git a/Projects/Presentation/Sources/Onboarding/View/Components/OnboardingChoiceButton.swift b/Projects/Presentation/Sources/Onboarding/View/Component/OnboardingChoiceButton.swift
similarity index 100%
rename from Projects/Presentation/Sources/Onboarding/View/Components/OnboardingChoiceButton.swift
rename to Projects/Presentation/Sources/Onboarding/View/Component/OnboardingChoiceButton.swift
diff --git a/Projects/Presentation/Sources/Onboarding/View/Components/ProgressBarView.swift b/Projects/Presentation/Sources/Onboarding/View/Component/ProgressBarView.swift
similarity index 100%
rename from Projects/Presentation/Sources/Onboarding/View/Components/ProgressBarView.swift
rename to Projects/Presentation/Sources/Onboarding/View/Component/ProgressBarView.swift
diff --git a/Projects/Presentation/Sources/Onboarding/View/RecommendedRoutineView.swift b/Projects/Presentation/Sources/Onboarding/View/OnboardingRecommendedRoutineView.swift
similarity index 70%
rename from Projects/Presentation/Sources/Onboarding/View/RecommendedRoutineView.swift
rename to Projects/Presentation/Sources/Onboarding/View/OnboardingRecommendedRoutineView.swift
index a04c219c..be644bdf 100644
--- a/Projects/Presentation/Sources/Onboarding/View/RecommendedRoutineView.swift
+++ b/Projects/Presentation/Sources/Onboarding/View/OnboardingRecommendedRoutineView.swift
@@ -1,5 +1,5 @@
 //
-//  RecommendedRoutineView.swift
+//  OnboardingRecommendedRoutineView.swift
 //  Presentation
 //
 //  Created by 최정인 on 7/11/25.
@@ -7,8 +7,10 @@
 
 import UIKit
 import Combine
+import Domain
+import Shared
 
-final class RecommendedRoutineView: BaseViewController<OnboardingViewModel> {
+final class OnboardingRecommendedRoutineView: BaseViewController<OnboardingViewModel> {
 
     private enum Layout {
         static let horizontalMargin: CGFloat = 20
@@ -19,7 +21,9 @@ final class RecommendedRoutineView: BaseViewController<OnboardingViewModel> {
         static let routineStackViewTopSpacing: CGFloat = 28
         static let routineButtonHeight: CGFloat = 84
         static let registerButtonHeight: CGFloat = 54
-        static let registerButtonBottomSpacing: CGFloat = 20
+        static let registerButtonBottomSpacing: CGFloat = 10
+        static let skipButtonHeight: CGFloat = 54
+        static let skipButtonBottomSpacing: CGFloat = 20
 
         static var mainLabelTopSpacing: CGFloat {
             let height = UIScreen.main.bounds.height
@@ -33,9 +37,11 @@ final class RecommendedRoutineView: BaseViewController<OnboardingViewModel> {
     private let recommendedRoutineStackView = UIStackView()
     private var recommendedRoutines: [Int: OnboardingChoiceButton] = [:]
     private let registerButton = PrimaryButton(buttonState: .disabled, buttonTitle: "등록하기")
+    private let skipButtonLabel = UILabel()
+    private let skipButton = UIButton()
     private var cancellables: Set<AnyCancellable>
 
-    public override init(viewModel: OnboardingViewModel) {
+    override init(viewModel: OnboardingViewModel) {
         cancellables = []
         super.init(viewModel: viewModel)
     }
@@ -44,19 +50,19 @@ final class RecommendedRoutineView: BaseViewController<OnboardingViewModel> {
         fatalError("init(coder:) has not been implemented")
     }
 
-    public override func viewDidLoad() {
+    override func viewDidLoad() {
         super.viewDidLoad()
-        viewModel.action(input: .fetchRecommendedRoutine)
     }
 
-    public override func viewWillAppear(_ animated: Bool) {
+    override func viewWillAppear(_ animated: Bool) {
         super.viewWillAppear(animated)
+        viewModel.action(input: .registerOnboarding)
 
         let stepCount = OnboardingType.allCases.count + 1
         configureNavigationBar(navigationStyle: .withPrograssBarWithCustomBackButton(step: stepCount, stepCount: stepCount))
     }
 
-    public override func configureAttribute() {
+    override func configureAttribute() {
         mainLabel.do {
             let text = "당신만의 추천 루틴이\n생성되었어요!"
             $0.attributedText = BitnagilFont(style: .title2, weight: .bold).attributedString(text: text)
@@ -81,9 +87,23 @@ final class RecommendedRoutineView: BaseViewController<OnboardingViewModel> {
         registerButton.addAction(UIAction { [weak self] _ in
             self?.viewModel.action(input: .registerRecommendedRoutine)
         }, for: .touchUpInside)
+
+        skipButtonLabel.do {
+            $0.attributedText = BitnagilFont(
+                fontSize: 14,
+                lineHeight: 20,
+                underline: true,
+                weight: .regular
+            ).attributedString(text: "건너뛰기")
+            $0.textColor = BitnagilColor.navy500
+        }
+
+        skipButton.addAction(UIAction { [weak self] _ in
+            self?.goToHomeView()
+        }, for: .touchUpInside)
     }
 
-    public override func configureLayout() {
+    override func configureLayout() {
         let safeArea = view.safeAreaLayoutGuide
         view.backgroundColor = BitnagilColor.gray99
 
@@ -91,6 +111,8 @@ final class RecommendedRoutineView: BaseViewController<OnboardingViewModel> {
         view.addSubview(subLabel)
         view.addSubview(recommendedRoutineStackView)
         view.addSubview(registerButton)
+        skipButton.addSubview(skipButtonLabel)
+        view.addSubview(skipButton)
 
         mainLabel.snp.makeConstraints { make in
             make.leading.equalTo(safeArea).offset(Layout.horizontalMargin)
@@ -115,12 +137,23 @@ final class RecommendedRoutineView: BaseViewController<OnboardingViewModel> {
         registerButton.snp.makeConstraints { make in
             make.leading.equalTo(safeArea).offset(Layout.horizontalMargin)
             make.trailing.equalTo(safeArea).inset(Layout.horizontalMargin)
-            make.bottom.equalTo(safeArea).inset(Layout.registerButtonBottomSpacing)
+            make.bottom.equalTo(skipButton.snp.top).offset(-Layout.registerButtonBottomSpacing)
             make.height.equalTo(Layout.registerButtonHeight)
         }
+
+        skipButtonLabel.snp.makeConstraints { make in
+            make.center.equalToSuperview()
+        }
+
+        skipButton.snp.makeConstraints { make in
+            make.leading.equalTo(safeArea).offset(Layout.horizontalMargin)
+            make.trailing.equalTo(safeArea).inset(Layout.horizontalMargin)
+            make.bottom.equalTo(safeArea).inset(Layout.skipButtonBottomSpacing)
+            make.height.equalTo(Layout.skipButtonHeight)
+        }
     }
 
-    public override func bind() {
+    override func bind() {
         viewModel.output.recommendedRoutinePublisher
             .receive(on: DispatchQueue.main)
             .sink { [weak self] recommendedRoutines in
@@ -141,6 +174,18 @@ final class RecommendedRoutineView: BaseViewController<OnboardingViewModel> {
                 self?.registerButton.updateButtonState(buttonState: canRegister ? .default : .disabled)
             }
             .store(in: &cancellables)
+
+        viewModel.output.registerRoutineResultPublisher
+            .receive(on: DispatchQueue.main)
+            .sink { [weak self] registerResult in
+                if registerResult {
+                    BitnagilLogger.log(logType: .debug, message: "추천 루틴 등록 완료")
+                    self?.goToHomeView()
+                } else {
+                    BitnagilLogger.log(logType: .error, message: "추천 루틴 등록 실패")
+                }
+            }
+            .store(in: &cancellables)
     }
 
     private func updateRecommendedRoutines(routines: Set<RecommendedRoutine>) {
@@ -175,4 +220,12 @@ final class RecommendedRoutineView: BaseViewController<OnboardingViewModel> {
             }
         }
     }
+
+    private func goToHomeView() {
+        guard let homeViewModel = DIContainer.shared.resolve(type: HomeViewModel.self) else {
+            fatalError("homeViewModel 의존성이 등록되지 않았습니다.")
+        }
+        let homeView = HomeViewController(viewModel: homeViewModel)
+        self.navigationController?.pushViewController(homeView, animated: true)
+    }
 }
diff --git a/Projects/Presentation/Sources/Onboarding/View/OnboardingResultView.swift b/Projects/Presentation/Sources/Onboarding/View/OnboardingResultView.swift
index 9ad68f3c..91d2e51f 100644
--- a/Projects/Presentation/Sources/Onboarding/View/OnboardingResultView.swift
+++ b/Projects/Presentation/Sources/Onboarding/View/OnboardingResultView.swift
@@ -7,6 +7,7 @@
 
 import UIKit
 import Combine
+import Domain
 
 final class OnboardingResultView: BaseViewController<OnboardingViewModel> {
 
@@ -36,7 +37,7 @@ final class OnboardingResultView: BaseViewController<OnboardingViewModel> {
     private let graphicView = UIView()
     private var cancellables: Set<AnyCancellable>
 
-    public override init(viewModel: OnboardingViewModel) {
+    override init(viewModel: OnboardingViewModel) {
         cancellables = []
         super.init(viewModel: viewModel)
     }
@@ -45,31 +46,31 @@ final class OnboardingResultView: BaseViewController<OnboardingViewModel> {
         fatalError("init(coder:) has not been implemented")
     }
 
-    public override func viewDidLoad() {
+    override func viewDidLoad() {
         super.viewDidLoad()
         viewModel.action(input: .makeOnboardingResult)
     }
 
-    public override func viewDidAppear(_ animated: Bool) {
+    override func viewDidAppear(_ animated: Bool) {
         super.viewDidAppear(animated)
 
         UIView.animate(withDuration: 0.5, delay: 3, options: .curveEaseInOut, animations: {
             self.view.alpha = 0.0
         }, completion: { [weak self] finished in
             guard let self else { return }
-            let recommendedRoutineView = RecommendedRoutineView(viewModel: self.viewModel)
+            let recommendedRoutineView = OnboardingRecommendedRoutineView(viewModel: self.viewModel)
             self.navigationController?.pushViewController(recommendedRoutineView, animated: true)
         })
     }
 
-    public override func viewWillAppear(_ animated: Bool) {
+    override func viewWillAppear(_ animated: Bool) {
         super.viewWillAppear(animated)
 
         let stepCount = OnboardingType.allCases.count + 1
         configureNavigationBar(navigationStyle: .withPrograssBar(step: stepCount, stepCount: stepCount))
     }
 
-    public override func configureAttribute() {
+    override func configureAttribute() {
         mainLabel.do {
             let text = "이제 당신에게\n꼭 맞는 루틴을 제안해드릴게요."
             $0.attributedText = BitnagilFont(style: .title2, weight: .bold).attributedString(text: text)
@@ -99,7 +100,7 @@ final class OnboardingResultView: BaseViewController<OnboardingViewModel> {
         }
     }
 
-    public override func configureLayout() {
+    override func configureLayout() {
         let safeArea = view.safeAreaLayoutGuide
         view.backgroundColor = BitnagilColor.gray99
 
@@ -145,7 +146,7 @@ final class OnboardingResultView: BaseViewController<OnboardingViewModel> {
         }
     }
 
-    public override func bind() {
+    override func bind() {
         viewModel.output.onboardingResultPublisher
             .receive(on: DispatchQueue.main)
             .sink { [weak self] onboardingResults in
diff --git a/Projects/Presentation/Sources/Onboarding/View/OnboardingView.swift b/Projects/Presentation/Sources/Onboarding/View/OnboardingView.swift
index 881fae74..dc05635b 100644
--- a/Projects/Presentation/Sources/Onboarding/View/OnboardingView.swift
+++ b/Projects/Presentation/Sources/Onboarding/View/OnboardingView.swift
@@ -7,6 +7,7 @@
 
 import UIKit
 import Combine
+import Domain
 
 final class OnboardingView: BaseViewController<OnboardingViewModel> {
 
@@ -36,7 +37,7 @@ final class OnboardingView: BaseViewController<OnboardingViewModel> {
     private let nextButton = PrimaryButton(buttonState: .disabled, buttonTitle: "다음")
     private var cancellables: Set<AnyCancellable>
 
-    public init(viewModel: OnboardingViewModel, onboarding: OnboardingType) {
+    init(viewModel: OnboardingViewModel, onboarding: OnboardingType) {
         self.onboarding = onboarding
         cancellables = []
         super.init(viewModel: viewModel)
@@ -46,11 +47,11 @@ final class OnboardingView: BaseViewController<OnboardingViewModel> {
         fatalError("init(coder:) has not been implemented")
     }
 
-    public override func viewDidLoad() {
+    override func viewDidLoad() {
         super.viewDidLoad()
     }
 
-    public override func viewWillAppear(_ animated: Bool) {
+    override func viewWillAppear(_ animated: Bool) {
         super.viewWillAppear(animated)
 
         let stepCount = OnboardingType.allCases.count + 1
@@ -59,7 +60,7 @@ final class OnboardingView: BaseViewController<OnboardingViewModel> {
         self.viewModel.action(input: .fetchOnboardingChoice(onboarding: onboarding))
     }
 
-    public override func configureAttribute() {
+    override func configureAttribute() {
         mainLabel.do {
             $0.attributedText = BitnagilFont(style: .title2, weight: .bold).attributedString(text: onboarding.mainTitle)
             $0.textColor = BitnagilColor.navy500
@@ -101,7 +102,7 @@ final class OnboardingView: BaseViewController<OnboardingViewModel> {
         }, for: .touchUpInside)
     }
 
-    public override func configureLayout() {
+    override func configureLayout() {
         let safeArea = view.safeAreaLayoutGuide
         view.backgroundColor = BitnagilColor.gray99
 
@@ -142,7 +143,7 @@ final class OnboardingView: BaseViewController<OnboardingViewModel> {
         }
     }
 
-    public override func bind() {
+    override func bind() {
         viewModel.output.timeOnboardingChoicePublisher
             .receive(on: DispatchQueue.main)
             .sink { [weak self] timeChoice in
@@ -164,7 +165,7 @@ final class OnboardingView: BaseViewController<OnboardingViewModel> {
             }
             .store(in: &cancellables)
 
-        viewModel.output.outdoorGoalOnboardingChoicePublisher
+        viewModel.output.outdoorOnboardingChoicePublisher
             .receive(on: DispatchQueue.main)
             .sink { [weak self] outdoorChoice in
                 self?.updateOnboardingChoice(onboardingChoice: outdoorChoice)
@@ -207,8 +208,8 @@ final class OnboardingView: BaseViewController<OnboardingViewModel> {
         case .frequency:
             nextStep = .feeling
         case .feeling:
-            nextStep = .outdoorGoal
-        case .outdoorGoal:
+            nextStep = .outdoor
+        case .outdoor:
             nextStep = nil
         }
 
diff --git a/Projects/Presentation/Sources/Onboarding/ViewModel/OnboardingViewModel.swift b/Projects/Presentation/Sources/Onboarding/ViewModel/OnboardingViewModel.swift
index 27b5ebad..1e1b73a1 100644
--- a/Projects/Presentation/Sources/Onboarding/ViewModel/OnboardingViewModel.swift
+++ b/Projects/Presentation/Sources/Onboarding/ViewModel/OnboardingViewModel.swift
@@ -6,25 +6,28 @@
 //
 
 import Combine
+import Domain
+import Shared
 
 final class OnboardingViewModel: ViewModel {
-    public enum Input {
+    enum Input {
         case selectOnboardingChoice(selectedChoice: OnboardingChoiceType)
         case fetchOnboardingChoice(onboarding: OnboardingType)
         case makeOnboardingResult
-        case fetchRecommendedRoutine
+        case registerOnboarding
         case selectRoutine(routine: RecommendedRoutine)
         case registerRecommendedRoutine
     }
 
-    public struct Output {
+    struct Output {
         let timeOnboardingChoicePublisher: AnyPublisher<OnboardingChoiceType?, Never>
         let frequencyOnboardingChoicePublisher: AnyPublisher<OnboardingChoiceType?, Never>
         let feelingOnboardingChoicePublisher: AnyPublisher<Set<OnboardingChoiceType>, Never>
-        let outdoorGoalOnboardingChoicePublisher: AnyPublisher<OnboardingChoiceType?, Never>
+        let outdoorOnboardingChoicePublisher: AnyPublisher<OnboardingChoiceType?, Never>
         let onboardingResultPublisher: AnyPublisher<[String], Never>
         let recommendedRoutinePublisher: AnyPublisher<Set<RecommendedRoutine>, Never>
         let selectedRoutinePublisher: AnyPublisher<Set<RecommendedRoutine>, Never>
+        let registerRoutineResultPublisher: AnyPublisher<Bool, Never>
         let nextButtonPublisher: AnyPublisher<Bool, Never>
     }
 
@@ -32,37 +35,46 @@ final class OnboardingViewModel: ViewModel {
     private let timeOnboardingChoiceSubject = CurrentValueSubject<OnboardingChoiceType?, Never>(nil)
     private let frequencyOnboardingChoiceSubject = CurrentValueSubject<OnboardingChoiceType?, Never>(nil)
     private let feelingOnboardingChoiceSubject = CurrentValueSubject<Set<OnboardingChoiceType>, Never>([])
-    private let outdoorGoalOnboardingChoiceSubject = CurrentValueSubject<OnboardingChoiceType?, Never>(nil)
+    private let outdoorOnboardingChoiceSubject = CurrentValueSubject<OnboardingChoiceType?, Never>(nil)
     private let onboardingResultSubject = CurrentValueSubject<[String], Never>([])
     private let recommendedRoutineSubject = CurrentValueSubject<Set<RecommendedRoutine>, Never>([])
     private let selectedRoutineSubject = CurrentValueSubject<Set<RecommendedRoutine>, Never>([])
+    private let registerRoutineResultSubject = PassthroughSubject<Bool, Never>()
     private let nextButtonSubject = PassthroughSubject<Bool, Never>()
 
-    public init() {
+    private let onboardingUseCase: OnboardingUseCaseProtocol
+    init(onboardingUseCase: OnboardingUseCaseProtocol) {
+        self.onboardingUseCase = onboardingUseCase
         self.output = Output(
             timeOnboardingChoicePublisher: timeOnboardingChoiceSubject.eraseToAnyPublisher(),
             frequencyOnboardingChoicePublisher: frequencyOnboardingChoiceSubject.eraseToAnyPublisher(),
             feelingOnboardingChoicePublisher: feelingOnboardingChoiceSubject.eraseToAnyPublisher(),
-            outdoorGoalOnboardingChoicePublisher: outdoorGoalOnboardingChoiceSubject.eraseToAnyPublisher(),
+            outdoorOnboardingChoicePublisher: outdoorOnboardingChoiceSubject.eraseToAnyPublisher(),
             onboardingResultPublisher: onboardingResultSubject.eraseToAnyPublisher(),
             recommendedRoutinePublisher: recommendedRoutineSubject.eraseToAnyPublisher(),
             selectedRoutinePublisher: selectedRoutineSubject.eraseToAnyPublisher(),
+            registerRoutineResultPublisher: registerRoutineResultSubject.eraseToAnyPublisher(),
             nextButtonPublisher: nextButtonSubject.eraseToAnyPublisher()
         )
     }
 
-    public func action(input: Input) {
+    func action(input: Input) {
         switch input {
         case .selectOnboardingChoice(let selectedChoice):
             selectChoice(choice: selectedChoice)
+
         case .fetchOnboardingChoice(let onboarding):
             fetchChoice(onboarding: onboarding)
+
         case .makeOnboardingResult:
             makeOnboardingResult()
-        case .fetchRecommendedRoutine:
-            fetchRecommendedRoutine()
+
+        case .registerOnboarding:
+            registerOnboarding()
+
         case .selectRoutine(let routine):
             selectRoutine(routine: routine)
+
         case .registerRecommendedRoutine:
             registerRecommendedRoutine()
         }
@@ -83,16 +95,16 @@ final class OnboardingViewModel: ViewModel {
             frequencyOnboardingChoiceSubject.send(frequencyOnboardingChoiceSubject.value)
             updateNextButtonSubject(choiceSubject: frequencyOnboardingChoiceSubject)
 
-        case .outdoorGoal:
-            outdoorGoalOnboardingChoiceSubject.send(outdoorGoalOnboardingChoiceSubject.value)
-            updateNextButtonSubject(choiceSubject: outdoorGoalOnboardingChoiceSubject)
+        case .outdoor:
+            outdoorOnboardingChoiceSubject.send(outdoorOnboardingChoiceSubject.value)
+            updateNextButtonSubject(choiceSubject: outdoorOnboardingChoiceSubject)
         }
     }
 
     // 온보딩 선택지를 선택합니다.
     private func selectChoice(choice: OnboardingChoiceType) {
         switch choice.onboardingType {
-        case .time, .frequency, .outdoorGoal:
+        case .time, .frequency, .outdoor:
             selectOnlyOneChoice(choice: choice)
         case .feeling:
             selecteMultipleChoices(choice: choice)
@@ -107,10 +119,10 @@ final class OnboardingViewModel: ViewModel {
             onboardSubject = timeOnboardingChoiceSubject
         case .frequency:
             onboardSubject = frequencyOnboardingChoiceSubject
-        case .outdoorGoal:
-            onboardSubject = outdoorGoalOnboardingChoiceSubject
+        case .outdoor:
+            onboardSubject = outdoorOnboardingChoiceSubject
         default:
-            onboardSubject = outdoorGoalOnboardingChoiceSubject
+            onboardSubject = outdoorOnboardingChoiceSubject
         }
 
         let currentChoice = onboardSubject.value
@@ -161,27 +173,44 @@ final class OnboardingViewModel: ViewModel {
 
         guard
             let timeOnboardingChoice = timeOnboardingChoiceSubject.value,
-            let outdoorGoalOnboardingChoice = outdoorGoalOnboardingChoiceSubject.value,
+            let outdoorOnboardingChoice = outdoorOnboardingChoiceSubject.value,
             let timeResult = timeOnboardingChoice.resultTitle,
-            let outdoorGoalResult = outdoorGoalOnboardingChoice.resultTitle
+            let outdoorResult = outdoorOnboardingChoice.resultTitle
         else {
             return
         }
 
-        let result = [timeResult, feelingResult, outdoorGoalResult]
+        let result = [timeResult, feelingResult, outdoorResult]
         onboardingResultSubject.send(result)
     }
 
-    // 온보딩 결과를 바탕으로 추천 루틴을 불러옵니다.
-    private func fetchRecommendedRoutine() {
-        recommendedRoutineSubject.send([])
-        // TODO: 서버 API 만들어진 후 UseCase와 연동하는 작업이 필요합니다.
-        let recommendedRoutines: [RecommendedRoutine] = [
-            RecommendedRoutine(id: 1, mainTitle: "루틴명", subTitle: "세부 루틴 한 줄 설명"),
-            RecommendedRoutine(id: 2, mainTitle: "루틴명", subTitle: "세부 루틴 한 줄 설명"),
-            RecommendedRoutine(id: 3, mainTitle: "루틴명", subTitle: "세부 루틴 한 줄 설명")
-        ]
-        recommendedRoutineSubject.send(Set(recommendedRoutines))
+    // 온보딩 결과를 등록하고, 그 결과를 바탕으로 추천 루틴을 받아옵니다.
+    private func registerOnboarding() {
+        var onboardingChoices: [OnboardingChoiceType] = []
+
+        let feelingOnboarding = Array(feelingOnboardingChoiceSubject.value)
+        guard
+            let timeOnboarding = timeOnboardingChoiceSubject.value,
+            !feelingOnboarding.isEmpty,
+            let frequencyOnboarding = frequencyOnboardingChoiceSubject.value,
+            let outdoorOnboarding = outdoorOnboardingChoiceSubject.value
+        else { return }
+
+        onboardingChoices.append(timeOnboarding)
+        onboardingChoices += feelingOnboarding
+        onboardingChoices.append(frequencyOnboarding)
+        onboardingChoices.append(outdoorOnboarding)
+
+        Task {
+            do {
+                let entities = try await onboardingUseCase.registerOnboarding(onboardingChoices: onboardingChoices)
+                let recommendedRoutines = entities.map({ $0.toRecommendedRoutine() })
+                recommendedRoutineSubject.send([])
+                recommendedRoutineSubject.send(Set(recommendedRoutines))
+            } catch {
+                BitnagilLogger.log(logType: .error, message: "\(error.localizedDescription)")
+            }
+        }
     }
 
     // 추천 루틴을 선택합니다.
@@ -199,6 +228,16 @@ final class OnboardingViewModel: ViewModel {
 
     // 추천 루틴을 등록합니다.
     private func registerRecommendedRoutine() {
-        // TODO: 서버 API 만들어진 후 UseCase와 연동하는 작업이 필요합니다.
+        let selectedRoutinesId = selectedRoutineSubject.value.map({ $0.id })
+
+        Task {
+            do {
+                try await onboardingUseCase.registerRecommendedRoutines(selectedRoutines: selectedRoutinesId)
+                registerRoutineResultSubject.send(true)
+            } catch {
+                BitnagilLogger.log(logType: .error, message: "\(error.localizedDescription)")
+                registerRoutineResultSubject.send(false)
+            }
+        }
     }
 }
diff --git a/Projects/Presentation/Sources/Protocols/BaseViewController.swift b/Projects/Presentation/Sources/Protocol/BaseViewController.swift
similarity index 85%
rename from Projects/Presentation/Sources/Protocols/BaseViewController.swift
rename to Projects/Presentation/Sources/Protocol/BaseViewController.swift
index 1f680c0e..ff36892a 100644
--- a/Projects/Presentation/Sources/Protocols/BaseViewController.swift
+++ b/Projects/Presentation/Sources/Protocol/BaseViewController.swift
@@ -8,8 +8,8 @@
 import Foundation
 import UIKit
 
-public class BaseViewController<T: ViewModel>: UIViewController {
-    public let viewModel: T
+class BaseViewController<T: ViewModel>: UIViewController {
+    let viewModel: T
 
     init(viewModel: T) {
         self.viewModel = viewModel
@@ -20,7 +20,7 @@ public class BaseViewController<T: ViewModel>: UIViewController {
         fatalError("init(coder:) has not been implemented")
     }
 
-    public override func viewDidLoad() {
+    override func viewDidLoad() {
         super.viewDidLoad()
 
         configureAttribute()
diff --git a/Projects/Presentation/Sources/Protocols/ViewModel.swift b/Projects/Presentation/Sources/Protocol/ViewModel.swift
similarity index 86%
rename from Projects/Presentation/Sources/Protocols/ViewModel.swift
rename to Projects/Presentation/Sources/Protocol/ViewModel.swift
index 439262fd..6b630c53 100644
--- a/Projects/Presentation/Sources/Protocols/ViewModel.swift
+++ b/Projects/Presentation/Sources/Protocol/ViewModel.swift
@@ -7,7 +7,7 @@
 
 import Foundation
 
-public protocol ViewModel {
+protocol ViewModel {
     associatedtype Input
     associatedtype Output