Describe a time you used serverless to solve a business problem.

Short answer: Example: Automated invoice processing using Azure Functions triggered by Blob uploads. Reduced manual workload and scaled automatically during peak hours. Integrated with Azure Storage, Cosmos DB, and Service Bus for processing workflow.

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.