You create several SQS queues to store different types of customer requests. Each SQS queue has a backend node that pulls messages for processing. Now you need a service to collect messages from the frontend and push them to the related queues using the publish/subscribe model. Which service would you choose?

Answer options:

A.Amazon MQ
B.Amazon Simple Notification Service (SNS)
C.Amazon Simple Queue Service (SQS)
D.AWS Step Functions

Correct Answer – B
AWS SNS can push notifications to the related SQS endpoints. SNS uses a publish/subscribe model that provides instant event notifications for applications.
Option A is incorrect: Amazon MQ is a managed message broker service, which is not suitable for this scenario.
Option B is CORRECT: Because SNS uses Pub/Sub messaging to provide asynchronous event notifications. Please check the link-https://aws.amazon.com/pub-sub-messaging/.
Option C is incorrect: Because SQS does not use the publish/subscribe model.
Option D is incorrect: AWS Step Functions coordinate application components using visual workflows. The service should not be used in this scenario.