Amazon Simple Notification Service (SNS) is a push notifications software designed to help businesses send messages to a large number of recipients instantly. SNS allows for the delivery of notifications via multiple channels, including email, SMS, and mobile push notifications. The platform is scalable, enabling businesses to send notifications to millions of users worldwide in real-time, ensuring that their messages reach the right audience when it matters most. Amazon SNS is fully integrated with AWS services, making it easy to trigger notifications based on specific events or user actions. With features like message filtering, reporting, and analytics, SNS helps businesses enhance communication, improve user engagement, and provide timely updates to customers.