How does it work (Publish-Subscribe(pub-sub))?

1: Create an SNS Topic

2: Subscribers can register for a Topic

3: When an SNS Topic receives an event notification (from

publisher), it is broadcast to all Subscribers

(Advantage) Decoupling: Producers don't care about Consumers

(Advantage) Availability: Producer up even if subscriber is down

Use Cases: Monitoring Apps, workflow systems

Provides mobile and enterprise messaging services

Push notifications to Apple, Android, FireOS, Windows devices

Send SMS to mobile users and Emails

REMEMBER : SNS does not need SQS or a Queue