Amazon SNS
Amazon Simple Notification Service (SNS) is a fully managed pub/sub messaging service from AWS that enables applications, microservices, and distributed systems to send messages or notifications to multiple subscribers, including HTTP/S endpoints, email, SMS, and other AWS services like SQS or Lambda. It provides topics for message grouping, supports fan-out patterns, and ensures reliable, scalable, and secure message delivery across cloud applications.
Developers should use Amazon SNS when building event-driven architectures, real-time notifications, or decoupled microservices that require broadcasting messages to multiple consumers, such as sending alerts, updates, or triggers in applications like IoT systems, mobile apps, or serverless workflows. It's ideal for scenarios needing high throughput, low latency, and integration with other AWS services for seamless cloud operations.