Service Decomposition:?

Short answer: Break services into smaller, more manageable components to isolate high-traffic functionality and scale them independently. Example: To handle increased traffic on the Order Service, you could use Redis caching to store frequent order details, apply auto-scaling with Kubernetes, and route traffic through a load balancer.

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.