How do Suspense and React.lazy work?

Short answer: React.lazy enables you to dynamically import components only when they are needed, enabling code splitting and lazy loading.

Explain a bit more

const LazyComponent = React.lazy(() => import('./LazyComponent')); function App() { return ( <React.Suspense fallback={<div>Loading...</div>}> <LazyComponent /> </React.Suspense> ); } Suspense is a wrapper around lazy-loaded components that shows a loading fallback while the component is being loaded.

Real-world example (ShopNest)

ShopNest’s storefront is React: components for ProductCard, CartDrawer, and CheckoutForm, with hooks for local UI state.

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.