Twilio is a cloud communications platform that allows developers to build and deploy communication applications via APIs (application programming interfaces). The platform provides a variety of communication channels including voice, SMS, video, and chat, as well as APIs for authentication, security, and other related services.

With Twilio, developers can easily add communication functionality to their applications, enabling them to send and receive text messages, make and receive phone calls, and conduct video conferences. The platform provides an easy-to-use interface for developers to integrate communication services into their applications without having to worry about the underlying infrastructure.