Ably is a real-time messaging platform that helps developers build and scale real-time applications. Its purpose is to provide a simple and intuitive interface for developers to build real-time applications. Ably allows developers to create channels for their applications, which can be used to send and receive messages between clients and servers. Developers can also create custom channels for their applications, which can be used to send and receive messages between clients and servers. Ably is designed to be used by developers who want to build real-time applications.