Question

A retail company is redesigning its order-processing platform. When an order is placed, three independent downstream systems must each receive a copy of the order message: an inventory service, a billing service, and an analytics service. The billing service should only receive messages for orders above $500, while the other two services must receive every order. The solution must decouple the publisher from consumers and support message filtering without custom routing code. Which Azure messaging design should you recommend?

Accepted Answer

Use an Azure Service Bus topic with three subscriptions, applying a SQL filter rule on the billing subscription to match orders above $500.

Answer

Use a single Azure Service Bus queue that all three services read from using competing consumers.

Answer

Use an Azure Storage queue and have each service poll it, discarding messages that do not apply to them.

Answer

Use an Azure Event Hubs instance with a single consumer group shared by all three services.