(Reuters) - Nielsen Holdings NV , best known for its TV ratings, increased the size of its contract with India's top software services exporter, Tata Consultancy Services Ltd , to $2.5 billion from $1 billion.
Nielsen also extended the contract by 3 years to 2020.
The media research company and TCS signed a 10-year contract in 2007 under which the Indian company was to provide IT and business services.
(Reporting By Aditya Kondalamahanty in Bangalore; Editing by Sriraj Kalluvila)