Server-Side Discovery:?

Short answer: The load balancer or API gateway queries the service registry to route requests to available instances of a service. Tools: Kubernetes DNS-based discovery, AWS ELB (Elastic Load Balancer). Example: In Kubernetes, services are registered automatically in Kubernetes DNS, and services can discover each other by querying the service names.

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.