Amazon Cognito unlocks advanced capabilities with next-generation infrastructure

Amazon Cognito describes its infrastructure modernization to a next-generation storage layer that enables high-throughput performance, customer-managed encryption keys, and multi-Region replication. The post explains the zero-downtime migration approach—shadow mode validation, data backfill with dual-write, anti-entropy reconciliation, and incremental rollouts with rollback capability—and shares lessons learned for large-scale modernization projects.