Advertising agencies are third parties who provide marketing and advertising services for other businesses and organizations. Advertising agencies provide all information about the market by utilizing various methods such as market research, popular culture knowledge and advanced sales techniques. Some of the services offered by the agencies include making logos and creating effective and attractive color schemes to draw the consumer's attention to their clients' ads. These agencies also prepare slogans and brochures, and write descriptive copy for sales materials. Most of the advertising agencies use assorted forms of media to promote their clients' businesses or organizations, including magazine advertisements, newspaper ads, radio and TV commercials, Websites, and even infomercials. The advertising agencies also get to know their clients' product or service well, and determine the demographic for promoting the product to the consumers.

Businesses across the world have also started outsourcing their marketing functions from agencies. These agencies work cohesively with the companies and offer professional help in chalking out marketing strategies for their client. The prime aim of the agency is to boost the sales of the company by providing marketing strategies that would help them reach out to a larger audience. The demographics and sale points are also studied by the marketing agencies to help supplement their services in the market. The marketing agencies work in tandem with advertising agencies in order to provide them with strategic inputs with regards to the target audience, geographies, mode of marketing, and learning about the markets.

The advertising and the marketing agencies together help a company sway consumers. The concept of brand recall and the strategies to gain control of a market in a particular country are made effective by these agencies. Although hiring these agencies is a costly affair, it is a worthy investment.