An agency that plans and buys media on behalf of advertisers, as distinct from a creative agency that makes the ads. The holding companies separated the two in the 1990s; independents and consultancies now offer both, and most digital-first agencies never separated them.
Related terms
Cite this entry:
Agency Echelon. "Media Agency." Agency Echelon Reference, reviewed September 2026. https://agencyechelon.com/reference/glossary/media-agency/