Infosys [Get Quote] bagged the contract along with four other IT vendors -- TCS [Get Quote], IBM, Patni Computers and Accenture.

"This is a landmark deal for Infosys," Nilekani said, adding "this deal clearly indicates that large offshore players like us have a competitive business model to deliver large, global, multi-year contracts.

TCS, Infosys bag biggest ever BPO deal

"It signifies a trend towards strategic global sourcing, where customers are selecting multiple, best-of-breed vendors to help improve efficiencies in their IT service delivery," he said.

"Our differentiation in the market place enables us to be a premium player even in such large multi-year contracts," he added.

The Bangalore-headquartered, Nasdaq-listed company said the five-year global deal to develop, support and enhance a wide spectrum of applications for ABN AMRO was the single largest multi-million Euro contract ever won by it.

The Infosys share of the overall contract includes committed volumes in North America, Europe and Asia-Pacific and the right to bid as a top five service provider for application development projects at the Dutch global bank.