What is concurrent mode in React?

Short answer: Concurrent Mode is an experimental feature in React that enables the rendering process to be interruptible. It allows React to work on multiple tasks at once, making apps feel more responsive by prioritizing higher-priority updates (like animations or user input) over lower-priority ones.

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.