You’ve read all of your free items this month. To register, get added benefits and unlimited access to articles, Become a Member. Already a Member? Sign in. Advertising Age Article Abstract Microsoft Moves Ad and Media Business to Dentsu Aegis and IPG Aegis' Carat Worked with Nokia Before Tech Giant Acquired Devices Business Last Year By Alexandra Bruell, Published on April 30, 2014 1 Want more Access, Content & Connections? Upgrade to Membership. We are glad you are enjoying Advertising Age. To get uninterrupted access and additional benefits, become a member today. Become a Member Already a member? Log in.