Multiple Regions: Handling service discovery across multiple regions or data?

Short answer: centers adds complexity. Use global service registries (e.g., Consul with WAN support) or cloud-native service discovery tools that support cross-region discovery.

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.