Routing conventions in Web API (attribute routing, route?

Short answer: templates) Attribute Routing (Preferred): [Route("api/products")] [ApiController] public class ProductsController : ControllerBase { [HttpGet("{id}")] public IActionResult Get(int id) { ... } } Route Templates: Use placeholders like {id}, constraints like {id:int}. You can also define route prefixes at controller level and use relative routes in actions.

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.