What is CORS, and how do you handle it in microservices?

Short answer: CORS (Cross-Origin Resource Sharing) is a security feature implemented by browsers that prevents web applications from making requests to a domain different from the one that served the web page. In a microservices architecture, services may need to communicate across different domains. Here’s how you can handle CORS:

Real-world example (ShopNest)

ShopNest splits Catalog, Cart, Order, and Payment into services so teams can deploy catalog changes without redeploying payments.

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.