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Companion Banner

A display ad shown alongside a video or audio ad, on the same page or in the player, carrying the click-through the audio or video cannot. Companions are specified in VAST and remain common in streaming audio and pre-roll.

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Cite this entry: Agency Echelon. "Companion Banner." Agency Echelon Reference, reviewed September 2026. https://agencyechelon.com/reference/glossary/companion-banner/

Reference

A reference library for digital advertising, written and reviewed by the Agency Echelon team. Free to read. No advertising, no sponsorship, no affiliate links, no email gate.

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Reviewed September 23, 2026. Reference text is licensed CC BY 4.0. Privacy