Tata Consultancy Services Ltd.

Nielsen Holdings NV has expanded the size of its contract with India's top software services exporter, Tata Consultancy Services (TCS), to $2.5 billion from $1 billion. Besides, the contract size, Nielsen has also extended the contract by three years to 2020.

As per the 10-year contract signed in 2007, TCS provided IT and business services to Nielsen. Besides this, the company already has a multi-year outsourcing contract worth $2.5 billion with Citigroup Inc and a $2.2 billion contract with UK-based Friends Life.

Tata Consultancy Services is an IT services, consulting and business solutions organization that delivers real results to global business, ensuring a level of certainty no other firm can match. TCS offers a consulting-led, integrated portfolio of IT, BPO, infrastructure, engineering and assurance services.