What changes with the update to ITP 2.2?
In addition to the cookies that are automatically deleted after seven days of being set by the customer, the ITP technology recognizes the link decoration. Link decoration occurs when a parameter in a URL is used to transfer information from one website to another and is typically marked with a "?" at the end of the URL.
Example
https://www.webtrekk.com/en/?utm_source=webpage&utm_campaign=DE+%7C+Website+Remarketing+%7C+Demo+Request&utm_medium=paid&utm_term=DE+%7C+Website+Remarketing+%7C+Demo+Request
+%7C+Desktop&utm_content=6116033819752&hsa_acc=100437940101357
XML
If these parameters are then stored in a cookie set by the client in the end user's cookie store AND the link takes an end user from a third-party website to the current site (the one that wants to store the cookie), the cookie most likely is deleted after 24 hours.