diff --git a/build/Build-MaesterModule.ps1 b/build/Build-MaesterModule.ps1
index 9370c954b..b1f58db05 100644
--- a/build/Build-MaesterModule.ps1
+++ b/build/Build-MaesterModule.ps1
@@ -476,7 +476,7 @@ $__MtSession = @{
     ExoCache = @{}
     OrcaCache = @{}
     AIAgentInfo = $null
-    AzureDevOpsConnection = $null
+    AzureDevOpsConnectionCache = $null
     DataverseApiBase = $null       # Resolved Dataverse OData API base URL (e.g. https://org123.api.crm.dynamics.com/api/data/v9.2)
     DataverseResourceUrl = $null   # Dataverse resource URL for token acquisition (e.g. https://org123.crm.dynamics.com)
     DataverseEnvironmentId = $null # Environment identifier for display (e.g. org123.crm.dynamics.com)
diff --git a/powershell/Maester.psm1 b/powershell/Maester.psm1
index 87e32974a..581231f38 100644
--- a/powershell/Maester.psm1
+++ b/powershell/Maester.psm1
@@ -22,6 +22,7 @@ $__MtSession = @{
 	ExoCache               = @{}
 	OrcaCache              = @{}
 	AIAgentInfo            = $null
+	AzureDevOpsConnectionCache = $null
 	DataverseApiBase       = $null       # Resolved Dataverse OData API base URL (e.g. https://org123.api.crm.dynamics.com/api/data/v9.2)
 	DataverseResourceUrl   = $null   # Dataverse resource URL for token acquisition (e.g. https://org123.crm.dynamics.com)
 	DataverseEnvironmentId = $null # Environment identifier for display (e.g. org123.crm.dynamics.com)
diff --git a/powershell/internal/Clear-ModuleVariable.ps1 b/powershell/internal/Clear-ModuleVariable.ps1
index 13e4adc14..3c3033ec3 100644
--- a/powershell/internal/Clear-ModuleVariable.ps1
+++ b/powershell/internal/Clear-ModuleVariable.ps1
@@ -20,7 +20,7 @@
     Clear-MtDnsCache
     Clear-MtExoCache
     $__MtSession.AIAgentInfo = $null
-    $__MtSession.AzureDevOpsConnection = $null
+    $__MtSession.AzureDevOpsConnectionCache = $null
     # Invoke-Maester resets the per-run cache but preserves the existing GitHub session.
     # Disconnect-MtGitHub, including through Disconnect-Maester, owns clearing GitHubConnection and GitHubAuthHeader.
     $__MtSession.GitHubCache = @{}
diff --git a/powershell/public/core/Test-MtConnection.ps1 b/powershell/public/core/Test-MtConnection.ps1
index dccfab5f9..f48d5c2b9 100644
--- a/powershell/public/core/Test-MtConnection.ps1
+++ b/powershell/public/core/Test-MtConnection.ps1
@@ -174,12 +174,12 @@
         #region AzureDevOps
         if ($Service -contains 'AzureDevOps' -or $Service -contains 'All') {
             $IsConnected = $false
-            if ($null -ne $__MtSession.AzureDevOpsConnection) {
+            if ($null -ne $__MtSession.AzureDevOpsConnectionCache) {
                 # Use cached probe result to avoid re-running the connection check on every test.
-                if ($__MtSession.AzureDevOpsConnection -is [string] -and $__MtSession.AzureDevOpsConnection -eq 'NotConnected') {
+                if ($__MtSession.AzureDevOpsConnectionCache -is [string] -and $__MtSession.AzureDevOpsConnectionCache -eq 'NotConnected') {
                     $IsConnected = $false
                 } else {
-                    $MtConnections.AzureDevOps = $__MtSession.AzureDevOpsConnection
+                    $MtConnections.AzureDevOps = $__MtSession.AzureDevOpsConnectionCache
                     $IsConnected = $true
                 }
             } else {
@@ -188,7 +188,7 @@
                         $connection = Get-ADOPSConnection
                         if ($null -ne $connection -and $null -ne $connection['Organization']) {
                             $MtConnections.AzureDevOps = $connection
-                            $__MtSession.AzureDevOpsConnection = $connection
+                            $__MtSession.AzureDevOpsConnectionCache = $connection
                             $IsConnected = $true
                         }
                     }
@@ -197,7 +197,7 @@
                 }
                 if (-not $IsConnected) {
                     # Cache negative result so subsequent calls skip the probe.
-                    $__MtSession.AzureDevOpsConnection = 'NotConnected'
+                    $__MtSession.AzureDevOpsConnectionCache = 'NotConnected'
                 }
             }
             Write-Verbose "AzureDevOps: $IsConnected"
diff --git a/powershell/tests/functions/Test-MtConnection.Tests.ps1 b/powershell/tests/functions/Test-MtConnection.Tests.ps1
index f0c450ccc..cf3384c6e 100644
--- a/powershell/tests/functions/Test-MtConnection.Tests.ps1
+++ b/powershell/tests/functions/Test-MtConnection.Tests.ps1
@@ -23,14 +23,14 @@ Describe 'Test-MtConnection — GitHub service' {
     BeforeEach {
         InModuleScope Maester {
             $__MtSession.GitHubConnection      = $null
-            $__MtSession.AzureDevOpsConnection = $null
+            $__MtSession.AzureDevOpsConnectionCache = $null
         }
     }
 
     AfterEach {
         InModuleScope Maester {
             $__MtSession.GitHubConnection      = $null
-            $__MtSession.AzureDevOpsConnection = $null
+            $__MtSession.AzureDevOpsConnectionCache = $null
         }
     }
 
@@ -112,7 +112,7 @@ Describe 'Test-MtConnection — GitHub service' {
         It 'Returns AllConnected $true when all included services are connected and GitHub session is absent' {
             InModuleScope Maester {
                 $__MtSession.GitHubConnection      = $null
-                $__MtSession.AzureDevOpsConnection = [PSCustomObject]@{ Organization = 'ado-org' }
+                $__MtSession.AzureDevOpsConnectionCache = [PSCustomObject]@{ Organization = 'ado-org' }
             }
             Mock Get-AzContext { [PSCustomObject]@{ Account = 'test@contoso.com' } } -ModuleName Maester
             Mock Invoke-AzRestMethod { [PSCustomObject]@{} } -ModuleName Maester
@@ -138,7 +138,7 @@ Describe 'Test-MtConnection — GitHub service' {
         It 'does not set the GitHub details property' {
             InModuleScope Maester {
                 $__MtSession.GitHubConnection      = [PSCustomObject]@{ Connected = $false; FailureReason = 'NotCalled' }
-                $__MtSession.AzureDevOpsConnection = 'NotConnected'
+                $__MtSession.AzureDevOpsConnectionCache = 'NotConnected'
             }
             Mock Get-AzContext { $null } -ModuleName Maester
             Mock Get-MgContext { $null } -ModuleName Maester
@@ -183,7 +183,7 @@ Describe 'Test-MtConnection — GitHub service' {
         It 'Does not populate the GitHub property' {
             InModuleScope Maester {
                 $__MtSession.GitHubConnection      = [PSCustomObject]@{ Connected = $true; Organization = 'myorg' }
-                $__MtSession.AzureDevOpsConnection = 'NotConnected'
+                $__MtSession.AzureDevOpsConnectionCache = 'NotConnected'
             }
             Mock Get-AzContext { $null } -ModuleName Maester
             Mock Get-MgContext { $null } -ModuleName Maester
@@ -194,3 +194,72 @@ Describe 'Test-MtConnection — GitHub service' {
         }
     }
 }
+
+Describe 'Test-MtConnection AzureDevOps cache' {
+    BeforeEach {
+        InModuleScope Maester {
+            $__MtSession.AzureDevOpsConnectionCache = $null
+            $__MtSession.Remove('AzureDevOpsConnection')
+        }
+    }
+
+    AfterEach {
+        InModuleScope Maester {
+            Remove-Item -Path function:Get-ADOPSConnection -ErrorAction SilentlyContinue
+            $__MtSession.AzureDevOpsConnectionCache = $null
+            $__MtSession.Remove('AzureDevOpsConnection')
+        }
+    }
+
+    It 'caches a successful Azure DevOps probe under a cache-specific key' {
+        $result = InModuleScope Maester {
+            New-Item -Path function:Get-ADOPSConnection -Value { @{ Organization = 'ado-org' } } -Force | Out-Null
+            Test-MtConnection -Service AzureDevOps -Details
+        }
+
+        $result.AllConnected | Should -BeTrue
+        $result.AzureDevOps['Organization'] | Should -Be 'ado-org'
+        InModuleScope Maester {
+            $__MtSession.AzureDevOpsConnectionCache['Organization'] | Should -Be 'ado-org'
+            $__MtSession.ContainsKey('AzureDevOpsConnection') | Should -BeFalse
+        }
+    }
+
+    It 'caches a failed Azure DevOps probe as NotConnected' {
+        $result = InModuleScope Maester {
+            New-Item -Path function:Get-ADOPSConnection -Value { $null } -Force | Out-Null
+            Test-MtConnection -Service AzureDevOps -Details
+        }
+
+        $result.AllConnected | Should -BeFalse
+        $result.AzureDevOps | Should -BeNullOrEmpty
+        InModuleScope Maester {
+            $__MtSession.AzureDevOpsConnectionCache | Should -Be 'NotConnected'
+            $__MtSession.ContainsKey('AzureDevOpsConnection') | Should -BeFalse
+        }
+    }
+
+    It 'uses the cached Azure DevOps probe result without re-querying the external command' {
+        InModuleScope Maester {
+            $__MtSession.AzureDevOpsConnectionCache = @{ Organization = 'cached-org' }
+        }
+        $result = InModuleScope Maester {
+            New-Item -Path function:Get-ADOPSConnection -Value { throw 'Get-ADOPSConnection should not be called when cache exists.' } -Force | Out-Null
+            Test-MtConnection -Service AzureDevOps -Details
+        }
+
+        $result.AllConnected | Should -BeTrue
+        $result.AzureDevOps['Organization'] | Should -Be 'cached-org'
+    }
+
+    It 'clears the Azure DevOps probe cache during module-variable reset' {
+        InModuleScope Maester {
+            $__MtSession.AzureDevOpsConnectionCache = @{ Organization = 'cached-org' }
+
+            Clear-ModuleVariable
+
+            $__MtSession.AzureDevOpsConnectionCache | Should -BeNullOrEmpty
+            $__MtSession.ContainsKey('AzureDevOpsConnection') | Should -BeFalse
+        }
+    }
+}