, who was replaced as chief marketing officer at Lenovo as part of a management shakeup, is leaving the world’s No. 4 PC maker.

Advani said late Tuesday that he would return to IBM, where he worked before Lenovo purchased IBM’s PC division four years ago.

“He will join the Software Group where he’ll help drive the Information Agenda across the company,” Lenovo spokesperson Ray Gorman told Local Tech Wire. “Information Agenda is IBM’s approach to helping customers build a competitive advantage using data as a strategic asset.”

Advani was vice president of marketing for IBM’s PC division.

Mike Sievert replaced Advani at Lenovo with the title of senior vice president and chief marketing officer. Sievert joined Lenovo as part of the deal in which Lenovo recently acquired Switchbox. Sievert helped launched the secretive Switchbox after leaving Microsoft where he directed the launch of Vista.

Advani directed Lenovo’s aggressive worldwide advertising and marketing campaign that culminated in the company’s high-profile support for the Beijing Olympics.