Advertising is la joie de vivre for Publicis. One of the world's largest advertising and media services conglomerates, the company provides a wide range of corporate communication and media services, including creative advertising, media and campaign planning, marketing, and public relations. Its flagship advertising networks include Leo Burnett, Fallon Worldwide, Digitas, Razorfish, and Saatchi & Saatchi; Publicis' Starcom MediaVest and ZenithOptimedia units are among the world's largest media planning enterprises. The company serves such big names as Cadbury, Coca-Cola, General Mills, Hewlett-Packard, and Procter & Gamble through offices in more than 200 cities and 100 countries.