Uber is a transportation network company (TNC) headquartered in San Francisco, California. Uber offers services including peer-to-peer ridesharing, ride service hailing, food delivery, and a bicycle-sharing system. The company has operations in 785 metropolitan areas worldwide. Its platforms can be accessed via its websites and mobile apps. Uber has been so prominent in the sharing economy that the changes in industries as a result of it have been referred to as Uberisation and many startups have described their products as "Uber for X".