The document discusses remarketing and retargeting advertising strategies. It explains that remarketing involves installing a cookie on a user's browser when they visit a website so that the website can then display ads to that user on other sites and in search results. This increases the chances that the user will see the ad multiple times and eventually return to the original website. The document breaks down the remarketing process into four steps - a user visits the site, the site installs a cookie, the cookie prompts retargeted ads, and hopefully the user then visits the site again.