Amazon Simple Notification Service (SNS) is a simple, fully-managed “push” messaging service that allows users to push texts, alerts or notifications, like an auto-reply message, or a notification that a package has shipped.

Amazon Simple Notification Service (Amazon SNS) is a web service that coordinates and manages the delivery or sending of messages to subscribing endpoints or clients. In Amazon SNS, there are two types of clients—publishers and subscribers—also referred to as producers and consumers