An advertising agency or ad agency or advert agency is a service based business dedicated to creating, planning, and handling advertising (and sometimes other forms of promotion) for its clients. An ad agency is generally independent from the client (it may be an internal department or even an internal agency) and provides an outside point of view to the effort of selling the client's products or services. An agency can also handle overall marketing and branding strategies and sales promotions for its clients.Typical ad agency clients include businesses and corporations, non-profit organizations and government agencies. Agencies may be hired to produce television commercials, radio commercials, Online Advertising, out of home advertising, Mobile Advertising and AR Advertising as part of an advertising campaign.