Tata Consultancy Services (TCS) operates in a large number of locations worldwide. As of the latest information available, TCS runs its services across more than 50 countries. They have a presence in key regions including North America, Latin America, Europe, Asia-Pacific, Middle East, and Africa. This widespread network allows TCS to offer IT services, consulting, and business solutions to a diverse global clientele. For the most recent and detailed information, it is advisable to check their official website or latest company reports.