How would you answer an interview scenario involving Azure Functions in Microsoft Azure?

For an interview scenario involving Azure Functions, I would first clarify the business goal, scale, constraints, and the failure or quality attribute the interviewer wants to explore. Azure Functions is a serverless compute service for event-driven and scheduled workloads. In this scenario, for a queue-triggered order processor, describe retries, idempotency, poison messages, scaling, and how you would prevent duplicate business operations. For production, keep functions stateless, use durable patterns when orchestration is required, configure retries and poison handling, propagate correlation IDs, and monitor execution through Application Insights. I would then explain the main alternatives and tradeoffs, identify likely failure modes, and describe how I would validate the solution through testing, observability, security controls, and recovery or rollback planning.