Tata Group, India's largest conglomerate, is made up of at least 100 companies with global interests spanning coffee to cars and salt to software. Of the 25 listed companies, here are some of the biggest, ranked by revenue for the year ended March 2015.
Products: Commercial vehicles and cars — most famously the Jaguar and Land Rover models, although in 2008 the company introduced the tiny Nano in India, touted at that time as the world's cheapest car. The company also manufactures ambulances, minibuses and trucks.
Size: $43 billion.
Biggest market: China accounts for 29 percent of Tata Motors' sales while India contributes 13.6 percent. The company is building new factories in Brazil and Slovakia in addition to the existing ones in India, China, U.K. and South Africa, among other locations.
Tata Consultancy Services
Products: Business software for a wide range of industries including banking, telecommunication, transport, retail and healthcare. With 315,000 workers, it is the world's second-largest IT employer, according to its latest annual report. The Tata Group's youngest listed company is also India's No.1 by market value and has offices in 46 countries including the U.S., U.K., Japan, China, Qatar, Mexico and Iceland.
Size: $15.5 billion.
Biggest market: North America accounts for almost 52 percent of its business; India contributes 6.4 percent. The Middle East and Africa are among its fastest-growing markets.
Products: Steel for use in cars, construction and railways — it's also a major manufacturer of handtools such as shovels, hammers and crowbars. These are tough times for steelmakers and Tata is no exception; the company is cutting costs and staff numbers in an attempt to counter the impact of Chinese imports flooding Europe.
Size: $22.8 billion.
Biggest market: 68 percent of its business comes from outside India.
Products: Soda ash, fertilizers and heavy chemicals, supplying global brands such as Unilever and Procter & Gamble. A producer of table salt since the 1980s, it is now diversifying into other packaged foods.
Size: $2.8 billion.
Biggest market: 71 percent of its business is in Asia.
Products: Owns and operates The Taj Group — a chain of luxury and business hotels with properties in the Maldives, Dubai, London and New York, among others. Its oldest property, the Taj Mahal Palace Hotel, opened in 1903 and was one of the locations targeted in the 2008 Mumbai terror attacks. The penthouse of the company's Pierre Hotel on Fifth Avenue was listed in January this year for $63 million.
Size: $685 million.
Biggest market: While its hotels are spread across the globe, India accounts for 69.5 percent of sales.
Products: Jewelry, watches, sunglasses and perfumes. While its business is nearly all domestic, Titan is the world's fifth-largest branded watch manufacturer, producing more than 15 million units a year.
Size: Almost $2 billion.
Biggest market: India contributes 97 percent.
Tata Global Beverages
Products: The local partner for Starbucks Corp. in India. The company cultivates tea and coffee, and sells packaged drinks including Tetley Tea, Eight O'Clock coffee and Himalayan mineral water.
Size: $1.3 billion.
Biggest market: India accounts for 38 percent of sales; the U.S. and Canada contribute 24.6 percent.