Twilio Segment has come together to provide a solution for developers to create amazing customer engagement experiences by tearing down data silos. The combination of Twilio's developer-first communications platform and Segment's Customer Data Platform makes it easier to build those experiences. Tido Carriero, a Twilio employee, created a track jacket app that demonstrates how to send Voice, SMS, and WhatsApp notifications using Twilio when a customer triggers an event on the website. The app uses Segment's analytics and audience identification with Twilio's communications channels. By following the instructions in this article, developers can build their own tracking apps and surface customer insights by tearing down data silos and engaging in a relevant way.