Building RESTful APIs with ASP.NET Core Controllers

Modern web and mobile applications rely heavily on robust back-end APIs to manage data and drive user experiences. Understanding how to build these services is a fundamental skill for any aspiring developer. In this comprehensive text-based course, you will learn how to design and build fully functional RESTful APIs using ASP.NET Core controllers. You will start with the core concepts of web protocols and routing before moving on to practical API design, data persistence, and modern development practices. What you'll learn: - Understand the foundational concepts of REST architecture and HTTP methods - Create controller classes to handle HTTP GET, POST, PUT, and DELETE requests - Implement dependency injection to manage services and data repositories cleanly - Validate incoming client data using modern validation techniques and model binding - Integrate OpenAPI and Swagger to document and test your API endpoints - Apply modern C# features like record types and async/await for cleaner, faster code The course begins with essential terminology, outlining how APIs communicate over the web. You will then progress through step-by-step written guides that show you how to structure controllers, handle data validation, and connect your API to a database. This course is designed for beginners who have a basic understanding of C# and want to transition into web development. No prior experience with API design or ASP.NET Core is required. Start reading today to build your first professional backend service.