Amazon SNS.

Fast, flexible, fully managed push messaging service.

Amazon Simple Notification Service (Amazon SNS) is a fully managed messaging service for both application-to-application (A2A) and application-to-person (A2P) communication.

The A2A pub/sub functionality provides topics for high-throughput, push-based, many-to-many messaging between distributed systems, microservices, and event-driven serverless applications. Using Amazon SNS topics, your publisher systems can fanout messages to a large number of subscriber systems including Amazon SQS queues, AWS Lambda functions and HTTPS endpoints, for parallel processing, and Amazon Kinesis Data Firehose. 

Benefits Modernize and decouple your applications Send 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. Reliable deliver messages Amazon SNS uses a number of strategies that work together to provide message durability. To start, published messages are stored across multiple, geographically-separated servers and data centers. Automatically scale your workload Amazon SNS leverages the proven AWS cloud to dynamically scale with your application. Ensure accuracy with message ordering and deduplication Amazon SNS FIFO topics work with Amazon SQS FIFO queues to ensure messages are delivered in a strictly ordered manner and are only processed once (deduplicated). Simiplify your architecture with message filtering Amazon SNS helps you simplify your pub/sub messaging architecture by offloading the message filtering logic from your subscriber systems,