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

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

What interviewers expect

• A clear definition tied to Azure in Microsoft Azure projects
• Trade-offs (performance, maintainability, security, cost)
• When you would and would not use it in production

Real-world example

In a production Microsoft Azure application, teams apply this when handling user-facing features or integration boundaries. For example, you might use it during a sprint where reliability and observability matter—logging metrics, validating edge cases, and documenting the decision in an ADR so future developers understand why the approach was chosen.

How to explain in the interview

1. Define the concept in one or two sentences.
2. Context — where it fits in Microsoft Azure architecture.
3. Example — a specific project, bug, or performance win.
4. Trade-off — what you gain vs what you sacrifice.

Tip: Practice aloud on Toolliyo mock interview or the Interview Q&A section before your real interview.