Tata Consultancy Services (TCS) is an Indian multinational information technology (IT) services and consulting company. It’s main headquartered is located in Mumbai, Maharashtra, India and largest TCS campus located in Chennai, Tamil Nadu, India. TCS is the second largest Indian company by market capitalisation. TCS was ranked 64th 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  has also became the first Indian IT company to reach $100 billion in market capitalisation.

Tata Consultancy Services Limited, initially started as “Tata Computer Systems” and was founded in 1968 by Tata Sons Limited. It was initially started as taking contracts which included punched card services to sister company TISCO (now Tata Steel), working on an Inter-Branch Reconciliation System for the Central Bank of India, and providing bureau services to Unit Trust of India. TCS established India’s first dedicated software research and development centre, the Tata Research Development and Design Centre (TRDDC) in Pune. In 1981, it established India’s first client-dedicated offshore development centre, set up for clients Tandem. TCS later (1993) partnered with Canada-based software factory Integrity Software Corp, which TCS later acquired. In 2006, it designed an ERP system for the Indian Railway Catering and Tourism Corporation. TCS received the 2019 American Business Awards from Four Stevies.

TCS and its 67 subsidiaries provides a wide range of information technology-related products and services including application development, business process outsourcing, capacity planning, consulting, enterprise software, hardware sizing, payment processing, software management, and technology education services. The firm’s also established software products which include TCS BaNCS and TCS MasterCraft.

TCS’ services are currently organized into the following service lines (percentage of total TCS revenues generated by each respective service line is shown below ): 2012-13 financial year data-

Application development and maintenance (43.80%) value

Asset leverage solutions (2.70%)

Assurance services (7.70%)

Business process outsourcing (12.50%)

Consulting (2.00%)

Engineering and Industrial services (4.60%)

Enterprise solution (15.21%)

IT infrastructure services (11.50%)

Cognitive Business Operations

Cloud Infrastructure

Automation and AI

Tata Consultancy Services has 285 offices across 46 countries and 147 delivery centers in 21 countries.

Tata Consultancy Services(TCS) is also located in-

India: Ahmedabad, Bengaluru, Baroda, Bhubaneswar, Chennai, Coimbatore, Delhi, Gandhinagar, Goa, Gurugram, Guwahati, Hyderabad, Bhopal, Indore, Jamshedpur, Kochi, Kolkata, Lucknow, Mumbai, Nagpur, Noida, Nashik, Patna,[88][89] Pune, Thiruvananthapuram, and Varanasi.

Asia (excluding India): Bahrain, China, Israel, UAE, Hong Kong, Indonesia, Japan, Malaysia, the Philippines, Saudi Arabia, Singapore, South Korea, Taiwan, Thailand, and Qatar.

Oceania: Australia.

Africa: South Africa, Morocco.

Europe: Belgium, Denmark, Finland, France, Germany, Hungary, Iceland, Republic of Ireland, Italy, Luxembourg, the Netherlands, Norway, Portugal, Spain, Sweden, Switzerland, and the United Kingdom.

North America: Canada, Mexico, and the United States.

South America: Argentina, Brazil, Chile, Colombia, Ecuador, Peru, and Uruguay.

TCS is one of the largest private-sector employers in India, and the fourth-largest employer among listed Indian companies (after Indian Railways, Indian Army, and India Post). TCS has crossed more than 500,000 employees as of 8 July 2021.