Update README.md

Author: packt-simrana

README.md

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-# Scalable-Application-Development-with-Nest.js
+# Scalable Application Development with NestJS
 
-Scalable-Application-Development-with-NestJS by [Packt](https://www.packtpub.com/en-us)
+<a href="https://www.packtpub.com/en-us/product/scalable-application-development-with-nestjs-9781835468609"><img src="https://content.packt.com/_/image/original/B21694/cover_image.jpg" alt="Book Name" height="256px" align="right"></a>
+
+This is the code repository for [Scalable Application Development with NestJS](https://www.packtpub.com/en-us/product/scalable-application-development-with-nestjs-9781835468609), published by Packt.
+
+**Leverage REST, GraphQL, microservices, testing, and deployment for seamless growth**
+
+## What is this book about?
+This book helps you build scalable server-side apps, create REST APIs and GraphQL APIs, adopt microservices architecture, and secure your apps through expert guidance and real-world case studies that help you embrace DevOps for seamless deployment.
+
+This book covers the following exciting features:
+* Master NestJS architecture and set up your environment with Node.js, npm, and TypeScript
+* Apply design patterns and best practices to build robust, maintainable apps
+* Build REST APIs and leverage GraphQL for flexible querying
+* Use microservices architecture to efficiently scale your applications
+* Understand how to test and debug APIs for optimal performance
+* Implement Apollo Federation for efficient GraphQL APIs in a federated system
+* Secure NestJS apps with advanced techniques
+
+If you feel this book is for you, get your [copy](https://www.amazon.com/Scalable-Application-Development-NestJS-microservices/dp/1835468608) today!
+
+<a href="https://www.packtpub.com/?utm_source=github&utm_medium=banner&utm_campaign=GitHubBanner"><img src="https://raw.githubusercontent.com/PacktPublishing/GitHub/master/GitHub.png" 
+alt="https://www.packtpub.com/" border="5" /></a>
+
+
+## Instructions and Navigations
+All of the code is organized into folders. For example, ch02.
+
+The code will look like the following:
+```
+// ... existing imports
+import { UsersModule } from './users/user.module';
+// ... existing code
+imports: [UsersModule], // Add this line
+// ... the rest of the code
+```
+
+**Following is what you need for this book:**
+If you are a software engineer, developer, or a tech lead looking to build scalable applications using NestJS, REST, GraphQL, and microservices, this book is for you. Whether you're new to NestJS or a seasoned developer, this guide will help you leverage NestJS for your next big project. It’s also ideal for project managers and other IT professionals seeking insights into enterprise-level efficient development, testing strategies, and deployment processes. Even technology enthusiasts will find this book enlightening.
+
+With the following software and hardware list you can run all code files present in the book (Chapter 1-18).
+
+### Software and Hardware List
+
+| Chapter  | Software required                   | OS required                        |
+| -------- | ------------------------------------| -----------------------------------|
+| 1-18        | NestJS 10                     |Windows, macOS, or Linux |
+| 1-18        | TypeScript 4.0 and above            |Windows, macOS, or Linux |
+| 1-18        | Client Application (Postman or a Web browser)            |Windows, macOS, or Linux |
+
+### Related products
+* Effective Angular [[Packt]](https://www.packtpub.com/en-us/product/effective-angular-9781805125532) [[Amazon]](https://www.amazon.com/Effective-Angular-Develop-applications-effectively/dp/1805125532)
+
+* Modern Full-Stack React Projects [[Packt]](https://www.packtpub.com/en-us/product/modern-full-stack-react-projects-9781837637959) [[Amazon]](https://www.amazon.com/Modern-Full-Stack-React-Projects-maintain/dp/1837637954)
+
+## Get to Know the Author
+**Pacifique Linjanja** is a skilled software engineer known for building enterprise-level applications
+with technologies such as NestJs. He has led diverse development teams globally, delivering scalable,
+efficient software solutions across multiple projects. In addition to his work, Pacifique actively
+contributes to open source communities, sharing his expertise and insights through technical talks
+and coding workshops. He enjoys mentoring new developers and continues to broaden his knowledge
+by exploring various fields beyond technology, believing in the importance of learning and giving
+back to the tech community.