Role of appsettings.json, appsettings.Development.json, etc. ● appsettings.json: Base configuration file used across all environments. ● appsettings.{Environment}.json: Environment-specific overrides (e.g., Development, Production). 🔧 ASP.NET Core loads them automatically based on the environment:

Short answer: SPNETCORE_ENVIRONMENT=Development ✅ Loaded in order of precedence, where later files override earlier ones.

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.