Capgemini reportedly paid about US$4 billion for IGATE which had 2014 revenues of $1.3 billion.
Pursuant to the terms of the merger agreement, announced on 27 April this year, IGATE - headquartered in New Jersey - became the indirect wholly owned subsidiary of Capgemini.
As a result of the acquisition, IGATE shares will cease trading, and will be delisted from the NASDAQ Global Select Market.
Capgemini chairman Paul Hermelin said the acquisition represented a major step in Capgemini’s history.
“With IGATE, our operations in North America have taken on a new dimension and are now our largest market in revenues. Our combined operations in India have now reached the size to compete on par with the world leaders in our industry.
“It will also benefit our customers by taking further our industrialisation and innovation initiatives. On behalf of our group, I’m glad to welcome the 31,000 people of IGATE to Capgemini”.