They remember that you have visited a website and this information is shared with other organizations such as advertisers. Quite often targeting or advertising cookies will be linked to site functionality provided by the other organization. For example, in our remarketing or retargeting campaigns, we will serve targeted ads to you after you have visited or taken action on our website. In terms of technical execution, remarketing is the process of using a JavaScript tag to place a cookie in your browser. The cookie then informs a remarketing platform to serve specific display ads through an ad exchange, based on the pages or products you have engaged with or searched for on our website or app.