Centralized Management:?

Short answer: Common concerns like security, logging, rate-limiting, and authentication can be handled at the gateway, reducing redundancy in the services. Example: Handling authentication at the gateway means each individual microservice doesn’t need to implement its own authentication logic.

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.