Remarketing is a digital advertising strategy that targets users who have previously visited a website but did not make a purchase or complete a desired action. By using cookies, advertisers can display tailored ads to these users as they browse other websites or social media platforms, reminding them of the products or services they showed interest in. This approach helps businesses reconnect with potential customers and encourages them to return to the site to complete their purchase. Remarketing can be an effective way to increase conversion rates and improve overall marketing ROI by keeping the brand top-of-mind for interested users.