How do you perform rollback in case of a failed deployment?

Short answer: How do you perform rollback in case of a failed deployment?

Explain a bit more

Answer: There are several ways: Use deployment slots — just swap back to the previous slot. Re-deploy a previous successful release in Azure DevOps. Use versioned artifacts — keep your last working package and redeploy it. Example: If your new API build breaks production, you can quickly redeploy the previous successful release version from Azure DevOps → Releases → “Redeploy”.

Real-world example (ShopNest)

Azure DevOps holds ShopNest repos, boards, and release pipelines in one place so build + deploy stay repeatable.

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.