Tech Mahindra has been one of the leaders in providing end to end solution to the IT needs of the telecom vertical and its merger with Mahindra Satyam (MSAT) makes it the fifth largest Indian IT player. It derives almost half of its revenue from the telecom vertical. The company was incorporated in 1986 as a joint venture between Mahindra & Mahindra and British Telecommunications (BT). In 2009, Tech Mahindra acquired Satyam Computer Services Limited. Tech Mahindra has over 112,807 employees.