At Microsoft, Lu will oversee several groups, including the Advertiser and Publisher Solutions business, the group McAndrews is leaving. Scott Howe will take over as corporate vice president of that group, Microsoft said Thursday.

Microsoft also has promoted Rik van der Kooi from general manager to corporate vice president in charge of the OSG Finance group, another division of which Lu will be in charge.

Lu also will oversee the Online Audience business, run by Senior Vice President Yusuf Mehdi, and the OSG Research and Development group, run by Senior Vice President Satya Nadella.

Before his most recent role at Yahoo, Lu was vice president of engineering responsible for the technology development of Yahoo's Search and Marketplace business unit, which includes the company's search, e-commerce, and local listings of businesses and products.

Before joining Yahoo in 1998, Lu was a research staff member at IBM Almaden Research Center. Before IBM, Lu worked at Carnegie Mellon University as a research associate and at Fudan University in China as a faculty member.