Amazon Simple Notification Service Topic Icon

Amazon Simple Notification Service (SNS) Topics are like central hubs for distributing messages to many different recipients. You create a topic and then subscribe various endpoints, such as email addresses, mobile devices, or other AWS services, to that topic. When you publish a message to the topic, SNS automatically delivers that message to all subscribed endpoints, making it a powerful tool for fanning out messages to various parts of your application or to different users.