Live Activity Integration for Rider App

Uber has successfully integrated Apple's Live Activities feature into its Rider app, enabling users to receive real-time trip updates directly on their iOS devices without needing to open the application. This involved significant engineering efforts to overcome challenges related to limited UI space, lack of direct networking and state in Live Activities, dynamic asset handling, and ensuring reliable updates through a combination of background app execution, push notifications, and a new backend service. The system also includes a server-driven language for content consistency across iOS Live Activities and Android push notifications, and has demonstrated measurable improvements in reducing cancellations and pickup defects.