The chapter discusses advertising and its role in the modern business world. It defines advertising as any paid form of non-personal presentation and ideas, goods, and services by an identified sponsor. Advertising is part of an organization's marketing communications and is one way to promote products along with the four P's of marketing: product, price, place, and promotion. The chapter also examines advertising's economic, social, and psychological functions and how it is used to attract attention, rouse interest, build desire, and obtain action from consumers. It concludes by listing the top advertising agencies globally.