Marketing cookies (also called “advertising cookies” or “targeting cookies”) are used by the website operator and third parties to record the behaviour of individual users, analyse the data collected and display personalised advertising, for example. These services make it possible to track the user across domains. For example, if you visit a fashion online shop, you will probably be shown advertising from that online shop when you visit other websites later. This so-called retargeting advertising can only be played because Google, for example, can evaluate which websites you have surfed on via the marketing cookies