Question 1

You are designing an event-driven architecture for an e-commerce platform.

When a customer places an order, a message must be sent to the Inventory service, the Billing service, and the Shipping service. The message contains the actual order payload (JSON data). The system must guarantee that messages are delivered in the exact order they were received (First-In-First-Out) and ensure no messages are lost if a downstream service is temporarily offline.

Which messaging service should you recommend?

Accepted Answer

Multiple receivers = Pub/Sub (Topics or Event Grid). Payload + FIFO + guaranteed delivery = Service Bus. Therefore, Service Bus Topics.

Question 2

What mistakes do candidates make on this AZ-305 question?

Accepted Answer

Choosing Service Bus Queues. Queues are point-to-point (one sender, one receiver). Topics are one-to-many.

How to approach this question

Full Answer

Common mistakes

Practice the full Azure Solutions Architect Expert AZ-305 Practice Exam 4

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