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 Publicis' Stephan Beringer Tapped as New President of Audience on Demand Exec Succeeds Kurt Unkel, Who Defected to Team Detroit By Alexandra Bruell, Published on January 28, 2014 0 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.