How to enable and configure CORS via middleware

Short answer: builder.Services.AddCors(options => { options.AddPolicy("MyPolicy", policy => { policy.WithOrigins(" .AllowAnyHeader() .AllowAnyMethod(); }); }); app.UseCors("MyPolicy"); Must be placed before routing/endpoints.

Real-world example (ShopNest)

ShopNest pipeline order matters: exception handling → HTTPS → auth → authorization → endpoints. Auth must run before protected APIs.

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.