Ad-Engagement Retargeting is retargeting people who previously interacted with ads, videos, posts, or campaign creative.
It matters because Reddit rewards relevance, authenticity, and community context. Brands that understand the platform’s terminology can build campaigns that feel useful to users instead of interruptive.
Example
A team creates a follow-up audience from an available ad-engagement source. The second ad explains the next decision in more detail rather than assuming that watching or clicking the first ad made the viewer a qualified lead.