With your data layer in place, the next step is to make it available to other applications. A Web API is how a mobile app, a single-page front end, or another service talks to your code over HTTP, and ASP.NET Core is the framework .NET developers use to build one.
You'll start by building a first REST API from scratch, then work with controllers to implement create, read, update, and delete operations using the standard HTTP methods and status codes. You'll compare that with minimal APIs, the lighter-weight way to define endpoints, and finish with the building blocks that run every request: routing, dependency injection, and the middleware pipeline.
With a working API in hand, you'll be ready for the next module, Authentication & Security, where you learn to protect it.
A step-by-step build of a REST API from scratch: project setup, Program.cs, dependency injection, a service layer, controllers and routing, testing with HTTP files, Swagger documentation, and connecting EF Core to SQL Server.
Builds a complete RESTful API with controllers: organizing code into models, services, and controllers, implementing CRUD with the right HTTP methods and status codes, attribute routing, and testing with Swagger UI.
A hands-on introduction to minimal APIs: how they create HTTP services with few dependencies and why they suit microservices and apps that need only essential files, features, and packages.
Explains how routing, dependency injection (singleton, scoped, and transient lifetimes), serialization, and the middleware pipeline work together to handle each request, including how a request moves through the framework.