Building Web APIs with ASP.NET Core - The Book Build fully-featured APIs with ASP.NET Core! An all-practical guide on building modern APIs utilizing REST and GraphQL standards

ASP.NET Core Web API - The Book

I'm pleased to announce that my new book, Building Web APIs with ASP.NET Core, is now available for purchase in E-Book and Paperback format on all the major online stores, including and!

Here’s the updated cover:

Building Web APIs with ASP.NET Core - The Book

The final edition came out after more than six months of feedback obtained through the Manning MEAP program, which helped polish the content immensely. For this reason, I would like to thank all the reviewers that spent their valuable time reading the individual chapters during the writing process, providing a vast amount of invaluable feedback!

Early Access offer: 35% discount code

The book is still available for Early Access purchase with a 50% discount using the au35san promo code, valid for all Manning catalogs!

Time-limited offer: 45% discount code

If you purchase the book no further than May 19th 2023, you can access an exclusive 45% discount using the pbdesanctis promo code (redeemable from the website)!


Build fully-featured APIs with ASP.NET Core! This all-practical guide is written like a real development project, taking you hands-on with modern APIs utilizing REST and GraphQL standards.


In Building Web APIs with ASP.NET Core you will learn how to:

  • Set up your environment with VS 2022, Node, Git, and more
  • Create an ASP.NET Core project from scratch
  • Integrate with SQL Server
  • Use Entity Framework Core to set up a data model
  • Create back-end controllers
  • Design an API to serve data
  • Write API documentation using Swagger and Swashbuckle
  • Consume an API using typical web client-side frameworks, including Angular and ReactJS
  • Handle requests and routes using controllers and Minimal API
  • Release and deploy your Web API in production on cloud-based hosting services such as MS Azure


Building Web APIs with ASP.NET Core is a practical beginner’s guide to creating your first web APIs using ASP.NET Core. In it, you’ll develop an API that feeds web-based services, including websites and mobile apps, for a board games application. The book is cleverly structured to mirror a real-world development project, with each chapter introducing a new feature request. You’ll build your API with an ecosystem of ASP.NET Core tools that help simplify everything from setting up your data model to generating documentation.

About the technology

Web APIs are the front door to an application, providing controlled access to its data and features. ASP.NET Core, Microsoft’s web framework, simplifies and accelerates API creation with powerful, developer-friendly features, including an innovative “no compile” coding experience. It is reliable, fast, free, open-source, and backed by Microsoft’s legendary support.

About the book

Building Web APIs with ASP.NET Core teaches you how to write safe, maintainable, and performant REST APIs. It’s full of best practices for modern and classic API styles, including REST and GraphQL. You’ll love the groundbreaking Minimal API model that helps you build pro-quality APIs with just a few lines of code. Each chapter contains realistic user stories, backlog items, and development tasks.

About the reader

For developers with some experience using the .NET Framework.

About the author

Valerio De Sanctis is a skilled IT professional with 25 years of experience in lead programming, web-based development, and project management using ASP.NET, PHP, and Java. He has held senior positions at a range of financial and insurance companies, most recently serving as Chief Technology Officer, Chief Security Officer, and Chief Operating Officer at a leading after-sales and IT service provider for multiple top-tier life and non-life insurance groups. He's also a Microsoft Most Valuable Professional (MVP) for Developer Technologies & Cloud and Datacenter Management.

Since 2014, he has operated an IT-oriented, web-focused blog at, featuring news, reviews, code samples, and guides designed to help developers and tech enthusiasts from all around the world. He has written several books on web development, many of which have become best-sellers on Amazon, with tens of thousands of copies sold worldwide.



About Ryan

IT Project Manager, Web Interface Architect and Lead Developer for many high-traffic web sites & services hosted in Italy and Europe. Since 2010 it's also a lead designer for many App and games for Android, iOS and Windows Phone mobile devices for a number of italian companies. Microsoft MVP for Development Technologies since 2018.

View all posts by Ryan

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