Uber was founded in 2009 in San Francisco by Travis Kalanick and Garrett Camp. It now employs over 16,000 people worldwide and has an annual revenue of $11.3 billion. The app allows users to request rides from nearby drivers, see fare estimates, track the driver's arrival, and pay through the app. While Uber faces some bans and regulations in certain areas, it has become a popular ride-hailing service globally and in India, where it competes primarily with Ola.