TCS won its first North American client in 1971 and was the first Indian technology firm to set up operations in New York Cit ... y in 1979. Today, we support our North-American customers with 17 offices in the US, three in Canada and three in Mexico, with more than 19,000 consultants delivering real business results. Our four development centers and centers of excellence create winning solutions that provide our North-American customers with a competitive edge in the marketplace. Tata Consultancy Services Limited (TCS) is an multinational information technology (IT) service, consulting and business solutions company headquartered in India. It is a subsidiary of the Tata Group and operates in 46 countries.TCS is one of the largest Indian companies by market capitalization ($80 billion). TCS is now placed among the ‘Big 4’ most valuable IT services brands worldwide.In 2015, TCS is ranked 64th overall in the Forbes World's Most Innovative Companies ranking, making it both the highest-ranked IT services company and the first Indian company. It is the world's 10th largest IT services provider, measured by the revenues. read more