HowToCodePage

ASP.NET Core

Web APIs and apps on .NET.

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This course has 3 lessons. Start with the first one and use the next / previous links at the bottom of each lesson — the sidebar keeps the whole course in order.

Lessons

  1. Minimal APIsBuild an HTTP API with route handlers, typed results and endpoint groups, and know when the minimal model is enough.
  2. Controllers, dependency injection and middlewareController-based APIs, the three service lifetimes and the middleware order that decides whether authentication runs before routing.
  3. Configuration and loggingHow the configuration stack layers sources, the options pattern for typed settings, and structured logging that is worth reading at 3am.

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Last refreshed 2026-09-17.