What is the difference between provisioned and serverless throughput in Cosmos DB?

Short answer: Provisioned throughput: Fixed Request Units (RUs) per second. Serverless: Automatically scales and billed per request. Use serverless for low or intermittent traffic.

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.