Uber Technologies Inc. is an American worldwide online transportation network company headquartered in San Francisco, California.
San Francisco, officially the City and County of San Francisco, is the cultural, commercial, and financial center of Northern California and the only consolidated city-county in California.
A transportation network company connects paying passengers with drivers who provide the transportation on their own non-commercial vehicles.
California is the most populous state in the United States.
How Uber Moves Your City Forward with Innovation | Uber by Uber
It develops, markets and operates the Uber mobile "app", which allows consumers with smartphones to submit a trip request, which the software program then automatically sends to the Uber driver nearest to the consumer, alerting the driver to the location of the customer.
A smartphone is a mobile phone with an advanced mobile operating system which combines features of a personal computer operating system with other features useful for mobile or handheld use.
Learn the Uber Basics | Uber by Uber
Since Uber's launch, several other companies have replicated its business model, a trend that has come to be referred to as "Uberification".
The legality of Uber has been challenged by governments and taxi companies, who allege that its use of drivers who are not licensed to drive taxicabs is unsafe and illegal; some taxi driver unions have called Uber drivers "pirate taxis".
A taxicab, also known as a taxi or a cab, is a type of vehicle for hire with a driver, used by a single passenger or small group of passengers, often for a non-shared ride.
Illegal taxicabs, sometimes known as gypsy cabs, are taxicabs and other for-hire vehicles that are not duly licensed or permitted by the jurisdiction in which they operate.