What do past buyers lists do in a dynamic remarketing campaign?

Past buyers lists in dynamic remarketing campaigns are designed to be highly responsive and automated. They refresh within minutes, ensuring that the audience segment is always up-to-date. Past buyers are automatically added to these lists based on their purchase history, streamlining the audience creation process. For this functionality to work effectively, customized Universal Event Tracking (UET) must be set up correctly on your website. This UET tag captures the necessary data, such as product IDs and purchase events, which then feeds into the dynamic remarketing lists. The option "Ensure ads for that product are shown again to the buyer" is incorrect because dynamic remarketing typically aims to show related products or cross-sell/upsell opportunities to past buyers, not necessarily the exact same product they already purchased.