What is the recommended source audience size to create a Lookalike Audience?

The recommended source audience size to create a Lookalike Audience is ideally between 1,000 to 50,000. This range is significant because it allows the algorithm to effectively analyze the characteristics and behaviors of your source audience while providing sufficient data to identify and target individuals who share similar traits in a larger population.

When creating Lookalike Audiences, having a source audience that is too small, such as under 1,000, may not provide enough variability or data for effective targeting, leading to less accurate lookalike profiles. Conversely, targeting a source audience that is too large can dilute the specificity of the audience characteristics, making it harder for the algorithm to pinpoint the common traits that define your ideal customer. By staying within the 1,000 to 50,000 range, marketers can achieve a balance that enhances the effectiveness of their Lookalike Audience campaigns.