David Ku, Yahoo!'s former senior vice-president and an expert in online PR, has joined Microsoft as a corporate vice-president of the company's Online Services Division.
The move will see Mr Ku working on "a range of initiatives" across the department, which includes the Bing search engine, a Microsoft spokesperson told technology publication TechCrunch.
Mr Ku, who on his Linked In page describes his specialties as including "search technology, response prediction and online advertising", starts work in his new role immediately, just a month after leaving his position at Yahoo!.
He is one of a number of high-ranking executives to have left the firm in recent times since the company had its own search engine taken over by Microsoft's Bing.
The appointment comes as Microsoft announces its third quarter figures for 2010, which chief financial officer Peter Klein described as "exceptional".
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