Vertical video ads in the short-form video feeds of Instagram and Facebook (Reels), YouTube (Shorts), and their equivalents. Reels and Shorts are the fastest-growing placements on their platforms and the direct competitors to TikTok's For You feed; creative made for one generally works on the others.
Related terms
Cite this entry:
Agency Echelon. "Reels Ads." Agency Echelon Reference, reviewed September 2026. https://agencyechelon.com/reference/glossary/reels-ads/