Replicate Amazon S3 bucket configurations across AWS Regions with AWS Step Functions

This article demonstrates how to automate replication of Amazon S3 bucket configurations across AWS Regions using AWS Step Functions and Lambda functions.

• Step Functions orchestrates two Lambda functions to recreate source bucket configurations in target Region
• Copies bucket policies, lifecycle rules, versioning, encryption, CORS, logging, tags, and access controls
• Logs all runs to DynamoDB audit table and CloudWatch for complete audit trail
• Handles KMS key scoping and Object Lock requirements with specific prerequisites
• Includes AWS CDK infrastructure code and deployment scripts for easy setup
• Best for replicating existing bucket configurations; use IaC for greenfield deployments
• Supports single-account cross-Region replication with automatic destination bucket naming

This solution automates bucket configuration replication for compliance requirements, mergers, or data-residency needs without manual recreation.