You are developing an e-commerce solution that uses a microservice architecture. You need to design a communication backplane for communicating transactional messages between various parts of the solution. Messages must be communicated in first-in-first-out (FIFO) order. What should you use? 

Answer options:

A. Azure Storage Queue
B. Azure Event Hub
C. Azure Service Bus
D. Azure Event Grid

A

As a solution architect/developer, you should consider using Service Bus queues when: ✑ Your solution requires the queue to provide a guaranteed first-in-first-out (FIFO) ordered delivery. Reference: https://docs.microsoft.com/en-us/azure/service-bus-messaging/service-bus-azure-and-service-bus-queues-compared-contrasted