AWS Adds Multi-Region Replication to Amazon Cognito Identity Service

2026-06-20 · Source: InfoQ · Field: Technology & Digital — Software Development & Engineering, Cloud Computing & IT Infrastructure, Cybersecurity & Data Privacy · Depth: Intermediate, quick

Summary

AWS introduced Amazon Cognito multi-region replication on June 20, 2026, a new feature that automatically synchronizes user identities and user pool configurations from a primary region to a designated secondary. This enhancement allows applications to maintain user authentication from a replica region during outages, eliminating the need for complex custom replication and failover mechanisms. The one-way replication ensures user data, credentials, and configurations are synchronized, with active sessions remaining valid across regions. While the secondary region is read-only, it supports all authentication methods, including federated sign-in and SAML/OIDC integrations. The service requires a multi-region customer-managed AWS KMS key and is currently limited to user pools on Cognito's next-generation infrastructure. Pricing is \$0.0045 per monthly active user (MAU) per replica for Essentials tier and \$0.006 per MAU for Plus, with a 30% additional charge for machine-to-machine authentication. Availability includes Northern Virginia, Singapore, Frankfurt, and Ireland.

Key takeaway

For DevOps Engineers or Solution Architects building highly available applications, Amazon Cognito's new multi-region replication significantly simplifies identity service resilience. You can now configure automatic user identity failover, reducing the need for complex custom replication solutions and mitigating data inconsistency risks. Evaluate its active-passive nature and current limitations, such as no new sign-ups or TOTP MFA support in the secondary region, to ensure it meets your specific RTO/RPO and MFA requirements before deployment.

Key insights

Amazon Cognito now offers multi-region replication for enhanced resilience and simplified disaster recovery of user identity management.

Principles

• Automated replication reduces custom solution complexity.
• Active-passive failover maintains user authentication.
• Customer-managed keys enhance security and compliance.

Method

Configure a primary and secondary region for one-way user pool replication, requiring a multi-region customer-managed AWS KMS key for failover.

In practice

• Authenticate users during regional outages.
• Simplify identity disaster recovery planning.
• Integrate with existing federated sign-in.

Topics

• Amazon Cognito
• Multi-Region Replication
• Identity Management
• Disaster Recovery
• AWS KMS
• User Authentication

Best for: CTO, VP of Engineering/Data, Product Manager, Software Engineer, DevOps Engineer, IT Professional

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Editorial summary, takeaway, and curation by AIssential. Original article published by InfoQ.