Tata Consultancy Services Limited (TCS) an Indian multinational information technology (IT) services and consulting company headquartered in Mumbai. It is a part of the Tata Group and operates in 150 locations across 46 countries. In March 2024, it was reported that TCS had more than 601,546 employees worldwide. TCS is the second-largest Indian company by market capitalization, the most valuable IT service brands worldwide, and the top Big Tech (India) company.