ASP.NET - Middleware components

Middleware components form the request–response pipeline in ASP.NET Core. Each middleware handles a specific concern.

Examples include authentication, logging, exception handling, CORS, and routing. Middleware executes sequentially.

Developers can write custom middleware to intercept requests or responses. Order matters; incorrect ordering breaks functionality.

Middleware replaces older HTTP modules and handlers, simplifying architecture.

Understanding middleware is essential for debugging and performance tuning.