What is AWS Simple Notation Service (SNS)?

The following article explains What is AWS Simple Notation Service (SNS).

Amazon Simple Notification Service (Amazon SNS) is a fully managed messaging service provided by Amazon Web Services (AWS). It enables you to send messages or notifications to a distributed set of recipients via various communication protocols. SNS simplifies the process of sending messages, notifications, or alerts to different endpoints, including email, SMS, mobile push notifications, and more.

Key features

  1. Topics: SNS uses a publish/subscribe model where messages are sent to “topics.” Subscribers can then subscribe to these topics to receive messages. Topics allow you to group recipients based on their interests or roles.
  2. Publishers and Subscribers: Publishers send messages to topics, and subscribers receive messages from topics. Subscribers can include applications, individuals, email addresses, phone numbers, and more.
  3. Protocols: SNS supports multiple protocols for message delivery, including:
    • Amazon SQS (Simple Queue Service)
    • Email/Email-JSON
    • SMS
    • Amazon Lambda
    • Mobile push notifications (e.g., Apple APNs, Google GCM/Firebase Cloud Messaging)
  4. Message Filtering: SNS allows you to apply message filtering policies to topics, ensuring that subscribers only receive messages that match their criteria.
  5. Fanout: SNS enables fanout distribution of messages to multiple subscribers, allowing you to send notifications to various endpoints without needing to manage the distribution logic.
  6. Dead Letter Queues: You can configure SNS to send messages to a Dead Letter Queue (DLQ) if they repeatedly fail to be delivered to subscribers.
  7. Message Attributes: Messages published to SNS topics can include message attributes, which are optional metadata that provide additional information about the message.
  8. Message Encryption: SNS supports message encryption in transit using HTTPS, and you can also use AWS Key Management Service (KMS) to encrypt message content.
  9. Message Retention: SNS retains messages for a configurable period, allowing subscribers to retrieve missed messages.
  10. Mobile Push Notifications: SNS can deliver push notifications to mobile devices, making it easy to send real-time alerts to users of your mobile applications.


Amazon SNS is widely used for sending notifications, alerts, and updates to users and applications across various communication channels. It’s a versatile service suitable for a range of use cases, including application monitoring, automated workflows, event notifications, and broadcasting messages to large audiences. SNS helps ensure that important information reaches the right recipients in a timely and efficient manner.

Further Reading

Cloud Computing with Amazon Web Service (AWS)

What is AWS Amplify?

Getting Started Your Journey into Cloud With AWS

How to Work With AWS Management Console?

What are the Important Components of AWS

Understanding Amazon EC2 and How Does it Work

Features and Benefits of Amazon S3 Bucket

What is AWS RedShift?

Demystifying Serverless Computing from the Ground Up

Different Types of Load Balancers in AWS

What is AWS SageMaker?

Applications of Elasticsearch

What is Elasticsearch?

Applications of Amazon Simple Notation Service

What is Elastic BeanStalk?

Applications of Amazon Simple Queue Service

What is Amazon Simple Queue Service?



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