The feature is called "Google Signals." Here are documentation links to how it's use in Google Ads & Google Analytics. Ads: https://support.google.com/ads/answ

The feature is called "Google Signals." Here are documentation links to how it's use in Google Ads & Google Analytics. Ads: https://support.google.com/ads/answer/2662856#zippy=,when-youre-signed-in https://support.google.com/ads/answer/2662856#zippy=,when-yo... Analytics: https://support.google.com/analytics/answer/9445345?hl=en&ref_topic=9303474#zippy=,in-this-article https://support.google.com/analytics/answer/9445345?hl=en&re... tl;dr If logged in to Chrome, your Google Account can be used as an "identity signal" in place of a first-party cookie. This allows cross-domain and cross-device tracking.