3. Tata Consultancy Services

2016 Rank: 4

Top Executive: Natarajan Chandrasekeran, CEO & Managing Director

Location: New York

www.tcs.com

India-based global services powerhouse Tata Consultancy Services, with in March said fiscal 2017 revenue grew 6.2 percent to $17.6 billion, led by a 29-percent growth in its digital business. TCS delivers an integrated portfolio of IT, business process, infrastructure, engineering, and assurance services via its 387,000-plus consultants in 45 countries.