Layouts, Partial Views, View Components?

Short answer: Layouts: Shared structure (e.g. header, footer) using _Layout.cshtml. Partial Views: Reusable UI snippets (_LoginPartial.cshtml). View Components: Partial views with logic. public class CartViewComponent : ViewComponent {

Example code

public IViewComponentResult Invoke() => View("Cart", model); }

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.