Failover mechanisms?

Short answer: Real-world Example: Banking application: Primary region → East US Secondary → West Europe If primary fails: Traffic routed automatically Tools used: Azure Front Door Traffic Manager Interview tip: Always mention: “Active-active or active-passive strategy”

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.