What do past buyers lists do in a dynamic remarketing campaign? Select all that apply.

Explanation: The correct answers are **Ensure ads for that product are shown again to the buyer**, **Have past buyers automatically added**, **Require customized universal event tracking set up correctly for that product**, and **Refresh within minutes**. In a dynamic remarketing campaign, past buyers lists play a crucial role in re-engaging with previous customers who have already shown interest in specific products or services. Firstly, they **ensure ads for that product are shown again to the buyer**, enabling advertisers to reconnect with previous buyers by displaying relevant ads tailored to their past purchase history. Additionally, these lists **have past buyers automatically added**, allowing advertisers to effortlessly target individuals who have already completed a purchase on their website. To effectively utilize past buyers lists, **customized universal event tracking must be set up correctly for that product** to accurately track and attribute conversions back to specific products or services purchased. Finally, these lists typically **refresh within minutes**, ensuring that recent purchases and customer interactions are promptly reflected in the remarketing campaign, thereby maintaining the relevance and effectiveness of the ads displayed to past buyers. Overall, past buyers lists play a pivotal role in dynamic remarketing campaigns by facilitating targeted advertising efforts, leveraging past purchase behavior to drive repeat sales, and ensuring that ads remain timely and relevant to previous customers.