What is the difference between HTTP/REST and gRPC in microservice communication?

Short answer: HTTP/REST: Protocol: Uses HTTP/1.1 for communication.

Explain a bit more

Data Format: Typically uses JSON (text-based) for data exchange, which is human-readable but less efficient than binary.

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.