Amazon Simple Notification Service (SNS) is a fully managed messaging service for both system-to-system and app-to-person (A2P) communication. It enables you to communicate between systems through publish/subscribe (pub/sub) patterns that enable messaging between decoupled microservice applications or to communicate directly to users via SMS, mobile push, and email.

The system-to-system pub/sub functionality provides topics for high-throughput, push-based, many-to-many messaging. Using Amazon SNS topics, your publisher systems can fan out messages to a large number of subscriber systems or customer endpoints including Amazon SQS queues, AWS Lambda functions, and HTTP/S, for parallel processing. The A2P messaging functionality enables you to send messages to users at scale using either a pub/sub pattern or direct-publish messages using a single API.


  • Modernize and decouple your application-Amazon SNS enables you to modernize your applications and decouple them into smaller, independent components that are easier to develop, deploy, and maintain. Leveraging a pub/sub-event-driven architecture for your application improves performance, reliability, and allows each component to scale independently.

  • Fanout messages directly to millions of users

    Amazon SNS enables you to send messages or notifications directly to users with SMS text messages to over 200 countries, mobile push on Apple, Android, and other platforms or email (SMTP). Amazon SNS provides redundancy across multiple SMS providers and allows you to push mobile notifications using a single endpoint for all platforms.

  • Reliably deliver messages
    Amazon SNS uses cross availability zone message storage to provide high message durability. Running within Amazon’s proven network infrastructure and data centers, Amazon SNS topics are available whenever your applications need them. All messages published to Amazon SNS are stored redundantly across multiple geographically separated servers and data centers. If subscriber endpoints aren’t available, Amazon SNS executes automatic message retry policies and can seamlessly move messages to dead-letter queues.
  • Automatically scale your workload
    Amazon SNS leverages the proven AWS cloud to dynamically scale with your application. Amazon SNS is a fully managed service, taking care of the heavy lifting related to capacity planning, provisioning, monitoring, and patching. The service is designed to handle high-throughput, bursty traffic patterns and enables you to send millions of messages per second

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