An advertisement is a public communication that promotes a product, service, brand or event in order to inform or influence consumers. Advertising helps educate consumers about how products or services can benefit them and builds brand understanding. Traditional advertising mediums include newspapers, magazines, television, radio, and billboards, but digital technology is increasingly used in the 21st century. Advertisements are helpful for generating employment, improving standards of living, supporting communication media industries, creating healthy competition, and contributing to economic development.