The company was founded by the legendary Dhirubhai Ambani (1932-2002), is India's largest private sector enterprise, with businesses in the energy and materials value chain. Group's annual revenues are in excess of US$ 34 billion. The flagship company, Reliance Industries Limited, is a Fortune Global 500 company and is the largest private sector company in India.
Backward vertical integration has been the cornerstone of the evolution and growth of Reliance. Starting with textiles in the late seventies, Reliance pursued a strategy of backward vertical integration - in polyester, fibre intermediates, plastics, petrochemicals, petroleum refining and oil and gas exploration and production - to be fully integrated along the materials and energy value chain.
The Group's activities span exploration and production of oil and gas, petroleum refining and marketing, petrochemicals (polyester, fibre intermediates, plastics and chemicals), textiles and retail.
Reliance enjoys global leadership in its businesses, being the largest polyester yarn and fibre producer in the world and among the top five to ten producers in the world in major petrochemical products.
The Group exports products in excess of US$ 20 billion to 108 countries in the world. Major Group Companies are Reliance Industries Limited (including main subsidiaries Reliance Petroleum Limited and Reliance Retail Limited) and Reliance Industrial Infrastructure Limited.
The Tata Group is a multinational conglomerate based in Mumbai, India. In terms of market capitalization and revenues, Tata Group is the largest private company in India. It has interests in steel, automobiles, information technology, communication, power, tea and hotels. The Tata Group has operations in more than 85 countries across six continents and its companies export products and services to 80 nations. The Tata Group comprises 98 companies in seven business sectors, 27 of which are publicly listed. 65.8% of the ownership of Tata Group is held by the charitable trust of Tata. Companies which form a major part of the group include Tata Steel, Corus Steel, Tata Motors, Tata Consultancy Services, Tata Tea, Titan Industries, Tata Power, Tata Communications and the Taj Hotels.
The group takes the name of its founder, Jamsedji Tata, a member of whose family has almost invariably been the chairman of the group. The current chairman of the Tata group is Ratan Tata, who took over from J. R. D. Tata in 1991 and is currently one of the major international business figures in the age of globality. The company is currently in its fifth generation of family stewardship.