Omnicom Group is a global marketing and communications company headquartered in New York City. It provides a wide range of services, including advertising, public relations, and digital marketing, through its various agencies. The company operates in over 100 countries and serves many well-known brands across different industries. Founded in 1986, Omnicom Group has grown through a series of mergers and acquisitions, making it one of the largest advertising conglomerates in the world. Its diverse portfolio includes agencies like BBDO, DDB, and TBWA, which are known for their creative campaigns and strategic marketing solutions.