AT&T vs Tata

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.

Tata Consultancy Services Limited is an Indian multinational information technology service, consulting and business solutions company headquartered in Mumbai, Maharashtra. Tata Consultancy Services Limited was founded in 1968 by a division of Tata Sons Limited. and providing bureau services to Unit Trust of India. In 1975, TCS conducted its first campus interviews, held at IISc,Bangalore. The recruits comprised 12 Indian Institutes of Technology graduates and three IISc graduates, who became the first TCS employees to enter a formal graduate trainee programme.