Answer
ASP.NET Core supports named environments such as Development, Staging, and Production, typically controlled by the ASPNETCORE_ENVIRONMENT variable.
Environment controls:
- Which configuration files are loaded (e.g.,
appsettings.Development.json). - Whether detailed error pages are shown.
- Which services or features are enabled (e.g., runtime compilation only in Development).
Environment-based configuration prevents debug info and dev-only behaviors from leaking into production.