Publicis Groupe is one of the largest global advertising and communications groups, with over 45,000 employees across 104 countries. It owns agencies such as Leo Burnett, Publicis, Saatchi & Saatchi, and digital agencies Digitas and Razorfish. The document discusses VivaKi, Publicis Groupe's media services division that was formed by combining ZenithOptimedia, Starcom MediaVest Group, and digital agencies. VivaKi's mission is to increase clients' marketing efficiency through proprietary tools and scale. Leadership profiles of key executives in Greater China are also provided.