Subsidiaries of this company come between brands and the general public. The Interpublic Group of Companies is one of the world's largest advertising and marketing services conglomerates. Its flagship creative agencies include McCann Worldgroupand Lowe & Partners, while such firms as Campbell-Ewald, Deutsch, and Hill, Holliday are leaders in the US advertising business. Interpublic also offers direct marketing, media services, and public relations through such agencies as Initiative and Weber Shandwick. Its largest have clients included General Motors, Johnson & Johnson, Microsoft, Samsung, and Unilever.