Inventory reserved If payment fails: ● Compensation triggered → cancel order Implementation in Azure: ● Azure Service Bus (events) ● Each service listens & reacts

Short answer: dvanced insight: Avoid 2-phase commit Use idempotency + retry mechanisms

Real-world example (ShopNest)

Order-paid events go to Service Bus; an Azure Function sends the confirmation email asynchronously.

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.