Creative l Digital l Marketing Creative agencies specialize in "creative" or design-based business models and are also known as a "creative boutique". Their basic interest is in the creation of the advertisement or branding. Other ("full-service") agencies offer design in conjunction with media buying. Media agencies concentrate on media buying. (In the 1990s, media and creative were often unbundled in the interests of economies of scale in buying media.[4]) The client who chooses to use a design only based advertising agency must assume some of the advertising purchasing. These are activities that are routinely handled by an agency with a media buying option.