Tata Consulting Services Ltd. was founded in 1968 by a division of Tata Sons Limited Tata Consultancy Services Limited (TCS) is the famous Indian Information technology (IT) services, consulting and business Solutions Company headquartered in Mumbai. TCS operates in 46 countries throughout the world. TCS is the largest Indian company by market capital and is the biggest India-based IT services company .TCS is now placed among the "Big 4" most valuable IT services brands worldwide. In 2013, TCS is ranked 40th overall in the Forbes World's Most Innovative Companies ranking, making it both the highest-ranked IT services company and the top Indian company. TCS works on the ideology that Effective Change Management is...a practice where art, science, and craft meet.