A placement is assigned two active ads: a flash sale ad (Priority 1) with an expired run date, and a brand awareness ad (Priority 12) with a valid run date. According to the decision logic, which setting does Campaign Manager 360 evaluate first to determine the final serving outcome?

Priority controls the serving hierarchy among ads assigned to the same placement. A lower priority number is considered before ads with higher priority numbers. After that hierarchy is applied, Campaign Manager 360 checks whether the selected ad can actually serve based on delivery requirements such as run dates and creative eligibility. If the higher-priority ad is not eligible, the system can move to an eligible lower-priority ad.