Amazon Simple Notification Service (SNS) is a fully managed messaging service that enables you to decouple microservices, distributed systems, and serverless applications. 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 or clients.
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AWS Simple Notification Service (SNS) is a fully managed messaging service that enables you to decouple microservices, distributed systems, and serverless applications. It provides high-throughput, push-based, many-to-many messaging between distributed systems, microservices, and event-driven serverless applications.
SNS follows a publish/subscribe (pub/sub) messaging paradigm, where publishers send messages to topics and subscribers receive them. A topic is a logical access point and communication channel. Each topic can support multiple subscription endpoints where messages are delivered.
Key features of SNS include:
1. Multiple Transport Protocols: SNS supports various delivery protocols including HTTP/HTTPS, Email, SMS, SQS, and Lambda functions.
2. Fanout Pattern: A single message published to an SNS topic can be delivered to multiple subscribers, enabling parallel processing.
3. Message Filtering: Subscribers can filter messages they receive based on message attributes.
4. Message Durability: SNS attempts to deliver messages at least once, with retry policies for HTTP endpoints.
5. Integration with AWS Services: SNS works seamlessly with services like CloudWatch for alarms, S3 for event notifications, and Lambda for serverless processing.
6. Cross-Region Delivery: Messages can be delivered to endpoints across different AWS regions.
7. Security: SNS provides encryption at rest using KMS and in-transit using HTTPS. Access control is managed through IAM policies and topic policies.
Common use cases include:
- Application alerts and notifications
- Mobile push notifications
- Email and SMS messaging
- System alerts and monitoring
- Workflow processing
- Event-driven architectures
SNS is priced based on the number of API requests, the number of notifications delivered, and additional charges for SMS notifications.AWS Simple Notification Service (SNS) is a fully managed messaging service that enables you to decouple microservices, distributed systems, and serverless applications. It provides high-throughput, push-based, many-to-many messaging between distributed systems, microservices, and event-driven serve…