Amazon SNS

Use Case

• Send one message to many receivers at the same time.

• Implements a Pub/Sub model: a producer publishes a message to an SNS Topic, which then distributes (“fans out”) the message to multiple subscribers.

Benefits

• Scalable Pub/Sub architecture.

• Decouples the producer from multiple consumers.

• Direct integration with many AWS services.

• Supports message filtering to deliver messages only to specific subscribers.

Key Characteristics

• All subscribers receive the message published to the topic.

• Up to 12.5M subscriptions per topic.

• Up to 100K topics per account.

Supported Subscribers

• Amazon SQS

• AWS Lambda

• Amazon Kinesis Data Firehose

• HTTP(S) endpoints

• SMS / Mobile push

• Email

AWS Services That Can Publish to SNS

• CloudWatch Alarms

• Amazon S3 (object create/delete events)

• Auto Scaling Groups (scaling events)

• AWS CloudFormation (stack state changes)

• AWS Budgets

• AWS Lambda

• AWS Database Migration Service (replication events)

• DynamoDB Streams

• Amazon RDS Events