Custom Audience is an advertiser-owned or platform-built audience such as website visitors, customer lists, or engagement audiences. In Reddit advertising, this term gives marketers, designers, developers, and business owners a precise way to talk about work that affects visibility, user experience, measurement, and revenue.
In practical reddit ads work, the important question is not just what Custom Audience means, but how it should influence decisions. 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.
A strong approach should connect Custom Audience to measurable outcomes such as qualified traffic, calls, form submissions, booked appointments, ecommerce revenue, or lower acquisition costs.
Example
A software company or local brand could use custom audience to reach niche communities where people already discuss a relevant problem. The campaign might test community targeting, keyword targeting, Reddit Pixel events, and creative that feels native to the conversation rather than overly polished or sales-heavy.