The mobile equivalent of header bidding: all demand sources bid on an in-app impression simultaneously instead of in waterfall order. In-app bidding raised app publisher revenue and simplified operations, and is now the default in major mediation platforms.
Related terms
Cite this entry:
Agency Echelon. "In-App Bidding." Agency Echelon Reference, reviewed September 2026. https://agencyechelon.com/reference/glossary/in-app-bidding/