3. Tata Consultancy Services
2017 Rank: 3
Top Executive: Natarajan Chandrasekeran, CEO & Managing Director
Location: New York
Tata Consultancy Services is a multinational IT service, systems integration, engineering, consulting and business solution provider. TCS has in recent years been evolving from providing back-end technology to delivering a broader range of business services to enterprise customers. The company has developed expertise in cybersecurity, cloud computing, big data, Internet of Things and artificial intelligence.