Wipro, the India-based company that has boomed thanks to IT offshoring by U.S. companies, announced Monday that it is acquiring New Jersey-based outsourcing firm Infocrossing for some US$600 million.

Infocrossing, which operates five data centers and manages infrastructure and applications for clients such as The Reader's Digest Association, has about 900 employees and was established more than 20 years ago.

Wipro has grown from 13,500 employees in 2003 to more than 72,000 today. Its purchase of Infocrossing is its largest acquisition to date.

In a conference call Monday, Zach Lonstein, CEO and chairman of Infocrossing, said the firm's customers "can expect continuity of continued service, as the management team is staying intact." He said the purchase by Wipro will give Infocrossing customers the "extended capabilities" of Wipro.

Infocrossing is an infrastructure services provider that also offers enterprise application and business process outsourcing. It has a particular focus in the health care area.