Audience expansion helps you reach more member accounts that are similar to your ad set's target audience. Member accounts reached through your targeting criteria and audience expansion will be reported together.
Enabling audience expansion allows your ad set to target member accounts that share similar characteristics, based on their profile information and attributes. As a result, you may see impressions delivered amongst professional demographics that don't always match your targeting selections.
For example, if your ad set targets a specific seniority level with a certain title, audience expansion may expand its reach to member accounts with the same title, but a different seniority level. This different seniority level will be visible in your ad set reports.
Here's a tip
If there are specific attributes, such as companies, titles, or seniority levels that you would like to exclude while using audience expansion, add them as exclusions to your targeting criteria.
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