Dentsu Holdings USA, the U.S. division of one of Japan's largest agency holding companies, this morning announced the acquisition of Innovation Interactive LLC, the New York-based parent of interactive agencies specializing in search, social media and audience targeting, including: 360i, SearchIgnite and Netmining. The companies said the Innovation Interactive units will continue to operate under the leadership of co-CEOs Will Margiloff and Bryan Wiener, who will report to Tim Andree, who in a separate move, was named president-CEO of Dentsu Holdings USA, and an Executive Officer of Dentsu Inc. Dentsu late Monday announced a restructuring of Dentsu Holdings USA, promoting Andree from CEO and also naming chairman of Dentsu America. As part of the reorganization, Scott Daly was named chief of media of Dentsu America, responsible for digital and media operations across Europe and the Americas. He had been executive vice president-media director of Dentsu America.