Federated Credential Management (FedCM) Migration for Google Identity Services

• Google Identity Services (GIS) will be migrating to the Federated Credential Management (FedCM) API after the phase-out of third-party cookies.
• The migration is scheduled to start in April and will automatically affect GIS developers.
• Websites with custom integrations may require minor changes.
• Developers are encouraged to experiment with FedCM through the beta program to ensure a smooth transition.
• This update is for all GIS web developers who use One Tap or Automatic Sign-In with the Chrome browser.
• The migration is part of the Privacy Sandbox initiative to support privacy and free experiences.
• Chrome's phased restriction of third-party cookies began in January 2024 and will reach 100% by the end of Q4 2024.
• Developers should review the migration guide to determine if their website will require changes.
• A checklist for developers is provided to help them prepare for the migration.