Dear Partner,
We're making some changes to how first-party cookies are managed in your AdSense account to simplify controls and improve your access to third-party demand.
First-Party Cookie Controls Are Changing
We've combined the controls for enabling first-party cookies and personalization into one single control. This means that turning on the new control will enable first-party cookies for the publisher, share it with demand sources and enable all usages including personalization. The new control would be set to the existing personalization control to aid the transition.
Sharing with Authorized Buyers
Currently, the first-party cookies are shared with
Google demand sources (Google Ads, Display & Video 360). Starting no earlier than December 12 2024, your first-party cookies will also be shared with Authorized Buyers. However, for the time being, this sharing will not include users in the EEA, Switzerland, UK, California, and some US states.
If you're already using first-party cookies for personalization, sharing with Authorized Buyers will be turned on by default. If you're only using first-party cookies without personalization, sharing will remain off.
You can find more detailed information about these changes and how AdSense uses first-party identifiers in the Help Center.
Sincerely,
The Google AdSense Team