Founded in 1917, the 4As strives to promote, advance, and defend the interests of our member agencies, employees and the advertising and marketing industries overall.

The Ad Council was founded as a nonprofit organization in 1942 with the belief that creative marketing can solve complex social issues. The Ad Council uses the power of communications to tackle pressing issues that face the United States of America.

Advertising differs from public relations in that advertisers pay for, and have control over, their messages. Advertising is communicated via (1) traditional media such as newspapers, magazines, television, radio, outdoor advertising or direct mail, and (2) digital media such as search results, blogs, websites, or text messages. The presentation of a message in a medium is called an advertisement, or ad for short.

An advertising agency, often referred to as a creative agency or an ad agency, is a business dedicated to creating, planning, and handling advertising and sometimes other forms of promotion and marketing for its clients. This website describes ad agencies and their businesses, and it highlights selected advertising agencies in the USA.

Website advertising is a marketing strategy that involves the use of the Internet as a medium to obtain website traffic and target and deliver marketing messages to the right customers. This site provides an overview of the topic and highlights selected website advertising resources.

Online advertising, also known as online marketing, Internet advertising, or digital advertising, is a form of marketing and advertising which uses the Internet to deliver promotional marketing messages to consumers. This directory highlights selected Internet advertising service providers.

Radio advertising is the purchase of audio commercials to promote products or services. Advertisers pay commercial radio stations for airtime; in exchange, the radio station broadcasts the advertisers' commercials to its listening audience. This directory lists selected radio advertising (and audio podcast advertising) providers.

Interactive advertising uses online or offline interactive media to communicate with consumers and to promote products, brands, and services, as well as public service announcements, corporate interests, or political groups. This directory lists interactive advertising service providers throughout the USA.

A "Sold" sign in the front yard indicates that this single-family home has recently been sold in a real estate transaction. The underlying "For Sale" sign advertised the house to potential buyers.

An advertising agency is an organization that is employed by advertisers to plan, design, place, and supervise their advertisements or advertising campaigns. This directory lists selected advertising agencies in each state of the United States

Digital display advertising is graphic advertising on Internet websites, apps or social media through banners or other advertising formats made of text, images, video, and audio. The main purpose of display advertising is to deliver general advertisements and brand messages to site visitors. This site lists selected advertising display suppliers in each state of the USA.

A sign is a device placed on or before a premises to identify its occupant and the nature of its business or, placed at a distance, to advertise a business or its products and services. This directory lists advertising sign suppliers in each state of the USA.