Response caching, output caching?

Short answer: Response caching caches HTTP responses based on headers. Output caching (new in ASP.NET Core 7) caches entire output of endpoints.

Real-world example (ShopNest)

A ShopNest checkout request flows through middleware, hits a minimal API or controller, uses scoped services, and returns ProblemDetails on errors.

Say this in the interview

1. Define — one clear sentence (the short answer above).
2. Example — relate it to a project like ShopNest or your real work.
3. Trade-off — when you would not use it.