The estimated number of people who were exposed to an ad.
How it's used
People reach shows you how many people were exposed to your message during an ad campaign. Compare impressions to people reach to see how efficiently your audience was reached by each publisher.
How it's calculated
People reach measures people using a persistent Facebook login, which allows you to identify a person's path across multiple browsers and devices. In the absence of a Facebook login, we use a machine learning model to extrapolate the individual people reached for the campaign.
* Nguồn: Facebook