Tricky Question — “How do you ensure zero?

Short answer: downtime deployment?” Strong Answer: Using deployment slots (blue-green deployment). Flow: Deploy to staging Test Swap with production

Real-world example (ShopNest)

ShopNest on Azure typically uses App Service + SQL Database + Blob Storage + Application Insights for monitoring.

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.