Publicis Groupe's Starcom MediaVest Group, after a review, has landed Microsoft's North American media-buying account and will provide input on its global media strategy. Incumbent Interpublic Group's Universal McCann and Mediabrands will retain Microsoft's ad-buying account in 35 countries. Kantar Media pegs Microsoft's U.S. ad spending for 2010 at $614.2 million -- an increase of 19% over 2009.

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