"The economic base of Chennai City had shifted from trade and commerce to administration and services by the early part of the 20th Century. In the post-Independence period, manufacturing became an important sector and Commissionerate of Municipal Administration (CMA) continues to be the most important industrial area in the State. Recent trend shows that the economic structure of the City is tertiarised with growing contribution by Information Technology/Information Technology Enabling Service/Business Process Outsourcing Industries."