CBS (The Columbia Broadcasting System) is an American English-language commercial broadcast television and radio network that is the flagship property of the CBS Entertainment Group division of ViacomCBS.
CBS is sometimes referred to as the Eye Network, in reference to the company's trademark symbol, in use since 1951. It has also been called the "Tiffany Network", alluding to the perceived high quality of CBS programming during the tenure of William S. Paley.
The network has its origins in United Independent Broadcasters Inc., a collection of 16 radio stations purchased by Paley in 1928 and renamed the Columbia Broadcasting System.
In 1974 CBS dropped its former full name and became known simply as CBS, Inc. The Westinghouse Electric Corporation acquired the network in 1995, renamed its corporate entity to the current CBS Broadcasting, Inc. in 1997.
In 2000 CBS came under the control of the first Viacom.