This document discusses how Hotels.com optimizes content on their mobile apps. It outlines 4 key ways: 1) For user goals and behaviors like spontaneous bookings. 2) For point of sale with localization in 90 locales and 57 currencies. 3) For the operating system by integrating with other apps. 4) For user context with over 3,000 device models and screen resolutions using responsive, modular, and motion design.