<Tr> <Th> Position </Th> <Th> City </Th> <Th> Description </Th> </Tr> <Tr> <Td> </Td> <Td> Bangalore </Td> <Td> Bangalore is known as the Silicon Valley of India and the IT Capital of India . It is considered to be a global information technology hub and it is India's largest exporter both of IT overall and of software . Some of the top Indian IT service providers like Infosys, Wipro, Mindtree and Mphasis are headquartered in Bangalore . It is also the site of the national headquarters of many top international firms like Intel, Texas Instruments, Bosch, Yahoo, SAP Labs, and Continental, among others . Bangalore alone accounts for more than 35% of all IT companies present in India and contains close to 5,000 companies, making it India's largest IT contributor . </Td> </Tr> <Tr> <Td> </Td> <Td> Hyderabad </Td> <Td> Hyderabad--known as the HITEC City or Cyberabad--is a major global information technology hub, the second - largest IT exporter in India, and the largest bioinformatics hub in India . It is the site of the first Microsoft development center in India, which is also Microsoft's largest software development center outside of its headquarters in Redmond, USA . </Td> </Tr> <Tr> <Td> </Td> <Td> Chennai </Td> <Td> The city has a world - class IT infrastructure with dedicated expressway nicknamed as IT expressways, and many other IT parks promoted by both government and private entities . The city's strong industrial base also favors the establishment of many major R&D centers in its vicinity . </Td> </Tr>

Role of information technology sector in indian economy