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In-house agency definition: in-house agency refers to a brand's internal team that focuses on the advertising and marketing of their product or service. The in-house agency is responsible for all of a brand's marketing and advertising tasks including: Account management. Advertising campaigns.
The advertising agency is a company that acts as an intermediary between the manufacturer of goods and services and the mass media that ultimately bring the message to the attention of consumers. In this way, the advertising needs of the agency's client are met.