How do you create a REST API using Node.js?

Short answer: Using Express.js, you can quickly set up routes and logic. 📌 Example: const express = require('express'); const app = express(); app.use(express.json()); app.get('/api/users', (req, res) => { res.json([{ id: 1, name: 'Alice' }]); }); app.listen(3000, () => console.log('Server running'));

Example code

Using Express.js, you can quickly set up routes and logic. 📌 Example: const express = require('express');
const app = express(); app.use(express.json()); app.get('/api/users', (req, res) => { res.json([{ id: 1, name: 'Alice' }]); }); app.listen(3000, () => console.log('Server running'));

Real-world example (ShopNest)

A ShopNest BFF in Node.js aggregates catalog and price APIs for the React storefront.

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.