"IGATE is a leading company that perfectly fits our strategic ambition. It will give us a new status on the American market, and take further our industrialisation journey to offer ever more competitive services to our clients," said Capgemini president Paul Hermelin in a statement.
Hermelin said the combined companies would post 12.5 billion euros in annual revenues, a third of which would be generated in North America, which he called the "largest and most innovative market for IT services... (and) by far the first market of the Group."
The purchase, which has been approved by the boards of both companies, also brings IGATE clients, including General Electric and the Bank of Canada, into Capgemini's stable.
IGATE, an applications, network and business process outsourcing specialist, will also help to expand Capgemini's position in the healthcare, retail and manufacturing markets.