Uncovering the use of Metadata in ASP.NET Core endpoint routing is like getting a superpower. The moment you understand how metadata is applied and how it drives features like Authorization, Rate-Limiting, CORS and OpenAPI you will get a better understanding how it works and fits together.

I will be your guide in this code safari into the realms of ASP.NET Core endpoint routing and it's use of metadata. You will learn how metadata is added in multiple ways, how it integrates with middleware, and how it can serve as a foundation for building custom middleware.