The Twilio API for WhatsApp provides a simple and reliable way to reach users directly in the WhatsApp application, allowing developers to add messaging experiences to existing workflows or applications in minutes. This API is compatible with Twilio developer tools like Functions, Sync, Debugger, and API Explorer, and eliminates operational overhead by hosting and managing encryption keys and messages between businesses and users. With the same API used for SMS, developers can now easily build innovative messaging experiences for their users on WhatsApp, engaging them in the most popular messaging application in the world, which is used by more than 1.5 billion people daily. The Twilio API also works seamlessly with other messaging channels like Facebook Messenger, RCS, and LINE, allowing developers to focus on building customer experiences without writing custom code for each channel.