Which feature allows you to customize the ads users will see based on their previous actions on your website?

The feature that allows you to customize the ads users will see based on their previous actions on your website is Remarketing Lists. This powerful tool enables advertisers to target individuals who have previously interacted with their site, serving tailored ads to them as they browse the web. By utilizing remarketing lists, businesses can engage users who may not have converted during their initial visit, reminding them of products or services they viewed, thereby increasing the likelihood of return visits and conversions.

Dynamic Ads, while also customizable, primarily focus on displaying products from a catalog dynamically to users based on their previous interactions. They do not inherently provide the extensive targeting control that remarketing lists do. Customized Reports relate to the analysis of data collected through Google Analytics, but they don't directly influence the ads shown to users. Optimal Ad Placement refers to where ads appear in various placements but does not address the customization based on user behavior. Thus, remarketing lists emerge as the essential feature for tailoring ad experiences based on prior website actions.