Send Fanout Event Notifications with Amazon SQS and Amazon Simple Notification Service. Learn how to implement a fanout messaging scenario using Amazon Simple Notification Service (SNS) and Amazon Simple Queue Service (SQS). In this scenario, messages are "pushed" to multiple subscribers, which eliminates the need to periodically check or poll for updates and enables parallel asynchronous processing of the message by the subscribers.

To illustrate this, we will assume that you are developing a cloud-native application that sends an Amazon SNS message to a topic whenever an order is placed on an online store. The Amazon SQS queues that are subscribed to that topic will each receive identical notifications for the new order.