Chennai is the fourth largest metropolitan area of India and the capital city of the Indian State of Tamil Nadu. Chennai is an important base for all the IT majors, including Wipro, Ascendas, Tata Consultancy Services, Infosys and Polaris. There are several reasons why this is so. The most important one is the city's reputation as a reliable centre for technical education, which results in companies being assured of a steady supply of qualified personnel. Apart from the Tier I companies, there are several smaller ones that operate in the IT-Enabled Services (ITES) and Business Process Outsourcing (BPO) segments.