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Simple Notification Service (SNS)

Simple Notification Service (SNS)

SNS Simplified:

Simple Notification Service is a pushed-based messaging service that provides a highly scalable, flexible, and cost-effective method to publish a custom messages to subscribers who wish to be informed about a certain topic.

SNS Key Details:

  • SNS is mainly used to send alarms or alerts.
  • SNS 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 endpoints for parallel processing, including Amazon SQS queues, AWS Lambda functions, and HTTP/S webhooks. Additionally, SNS can be used to fan out notifications to end users using mobile push, SMS, and email.
  • You can send these push notifications to Apple, Google, Fire OS, and Windows devices.
  • SNS allows you to group multiple recipients using topics. A topic is an access point for allowing recipients to dynamically subscribe for identical copies of the same notification.
  • One topic can support deliveries to multiple endpoint types. When you publish to a topic, SNS appropriately formats copies of that message to send to whichever kind of device.
  • To prevent messages being lost, messages are stored redundantly across multiple AZs.
  • There is no long or short polling involved with SNS due to the instantaneous pushing of messages
  • SNS has flexible message delivery over multiple transport protocols and has a simple API.