The source – simoahava.com
There are new integrations in the Google Tag Manager server containers: the Floodlight and Google Ads Remarketing tags.
This is not full-fledged server-side logic, as it requires the user to make a request to doubleclick.net using a 3-party cookie in the browser. And that means that users in Safari and other browsers that disallow 3-party cookies will still not be included in the remarketing audiences.