Jack oversees the strategic assets of VivaKi's four agency
networks: Digitas, Razorfish, Starcom MediaVest Group (SMG) and
ZenithOptimedia (ZO). He is also a member of Publicis Groupe's
Directoire and its executive committee, the P12. Prior to VivaKi,
Jack was chairman of Publicis Groupe Media, where he oversaw the
global expansion of SMG - which he founded in 2000 - and ZO. A
revered figure in the media industry, Jack has been named president
of the Cannes Media Jury (2000), Mediaweek Media
Director of the Year, Advertising Age Media Maven, The
Festival of Media's Media Professional of the Year and
Adweek Top Buyer.