Client-Side Discovery: The client service queries a central service registry (e.g.,?

Short answer: Consul, Eureka) to find available instances of the service it needs to communicate with. Once the client knows the available instances, it directly calls the service. Example: The Order Service queries Eureka to get the available instances of the Payment Service.

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.