Halo sales refer to indirect sales generated by advertising a specific product, which then leads to purchases of other, non-promoted products within the same brand or store. For example, if a customer clicks on an ad for a specific shoe but ends up buying socks as well, the sock sale is considered a halo sale.

Adspert's tracking and optimization are based on data available through the ad platforms' APIs, focusing on directly attributed sales — meaning those that occur after a customer clicks on an ad and makes a purchase within the attribution window. Adspert includes halo sales in optimization as long as they are part of the platform’s attributed sales.