How do you deploy a Node.js app to production?

Short answer: Deploying means getting your app from your local machine to a live server.

Explain a bit more

Basic steps: Choose a hosting platform: VPS (DigitalOcean, AWS EC2), PaaS (Heroku, Vercel), or container platforms (Kubernetes, Docker). Set environment variables securely (don't hardcode secrets). Install dependencies using npm install --production. Run your app with a process manager (like PM2) for stability. Set up reverse proxy (using Nginx or Apache) to handle HTTPS, load balancing, and static files. Automate deployments with scripts or CI/CD pipelines.

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.