The full form of TCS is Tata Consultancy Services. TCS is a multinational IT service and consulting company headquartered in Mumbai, India, and is part of the Tata Group, one of Indias oldest and most respected business conglomerates. TCS offers a wide array of services, including software development, consulting, business process outsourcing, infrastructure services, and digital transformation solutions. It operates across multiple industry verticals, including banking and financial services, healthcare, retail, manufacturing, telecommunications, and more. TCS is one of the largest multinational IT service and consulting companies, with over 600,000 employees and a market cap of over $200 billion.