Uber is a popular ride-sharing service that allows users to book a ride through a mobile app. It provides a convenient and efficient way for people to get around in cities around the world. With Uber, users can easily request a ride, track their driver's location, and pay for their trip all through the app. The service has revolutionized the transportation industry and has become a go-to option for many people looking for a reliable and affordable way to get from point A to point B.