Uber develops and operates a mobile app that allows users to request rides from crowd-sourced partner drivers. The app enables users to arrange and schedule transportation services with third-party providers. With a presence in over 600 cities worldwide, Uber aims to solve transportation challenges for drivers, riders, delivery partners, and eaters. The company offers its services through various smartphone applications, including Windows Phone, iPhone, Blackberry, and Android. Uber was founded in 2009 and is headquartered in San Francisco, California, with additional offices in Bengaluru and Singapore.