AT&T vs Salesforce

AT&T Inc. is an American multinational telecommunications corporation, headquartered at Whitacre Tower in downtown Dallas, Texas. AT&T Inc. began its existence as Southwestern Bell Corporation, one of seven Regional Bell Operating Companies created in 1983 in the divestiture of the American Telephone and Telegraph Company following the 1982 United States v. AT&T antitrust lawsuit. Southwestern Bell changed its name to SBC Communications Inc. in 1995. In 2005, SBC purchased former parent AT&T Corp. and took on its branding, with the merged entity naming itself AT&T Inc. and using the iconic AT&T Corp. logo and stock-trading symbol.

Salesforce.com is a cloud computing company headquartered in San Francisco, California. Though its revenue comes from a customer relationship management product, Salesforce also tries capitalizing on commercial applications of social networking through acquisition. As of 2015, it is one of the most highly valued American cloud computing companies with a market capitalization of $50 billion, It is listed on the New York Stock Exchange and is a constituent of the S&P 500 index.