Amazon Cognito now supports multi-Region replication for user and machine identity data. The feature synchronizes credentials, user pool configurations, and federation setups to a secondary user pool in near real-time, providing a standby replica that can accept traffic during regional disruptions.

When the primary Region experiences service disruption, traffic redirects to the secondary user pool automatically. Signed-in users maintain application access without re-authentication, while registered users can sign in with existing credentials. All authentication methods remain functional in the secondary Region, including username/password, social federation, and SAML/OIDC providers.

Multi-Region replication is available as an add-on for user pools in Essentials or Plus feature tiers. The feature launches across major AWS Regions including US East, US West, Asia Pacific, Canada, Europe, and South America. Configuration happens through the AWS Management Console, CLI, or SDKs by adding a replica user pool.

This addresses a critical gap in Cognito's disaster recovery capabilities, giving enterprises the redundancy needed for mission-critical authentication systems. The near real-time sync and seamless failover make it practical for production workloads requiring high availability.