Invoicing for media, based on delivered impressions reconciled between the publisher's and advertiser's counts, plus fees. Agencies bill clients and pay vendors, carrying the float and the credit risk; sequential liability and payment terms determine who bears what.
Related terms
Cite this entry:
Agency Echelon. "Billing." Agency Echelon Reference, reviewed September 2026. https://agencyechelon.com/reference/glossary/billing/