Distributed Tracing: Implement distributed tracing using tools like Jaeger or Zipkin?

Short answer: to trace requests across multiple services. This helps in understanding how requests flow through the system and identifying bottlenecks.

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.