Avenue A/Razorfish general manager Harrison Magun has left the agency and gone over to Microsoft.

Magun has left the aQuantive agency and joined Microsoft's MSN as director of media analytics, reports AdWeek. He pointed to "the opportunity to leverage cross media strategy and analytics, in a global context, with a world class company and world class clients." Magun joined Avenue A/Razorfish in December 2003, when Avenue A acquired SEM firm eonMedia, where Magun was managing director.