Maintaining HIPAA compliance when migrating with AWS Transform MGN

This article provides a comprehensive guide for maintaining HIPAA compliance during healthcare workload migrations to AWS using AWS Transform MGN with a multi-account architecture and layered security controls.

• Deploy multi-account structure with separate Security/Log Archive, Central Migration, and workload accounts to isolate audit evidence from migration operators
• Configure customer-managed KMS keys with cross-account grants scoped to EC2/EBS usage for encryption at rest and independent key management
• Implement private replication using VPC interface endpoints, no public IPs, and TLS 1.2+ encryption to protect PHI in transit
• Enable Organization CloudTrail (SSE-KMS encrypted) with log file validation and Service Control Policies preventing tampering
• Deploy AWS Config HIPAA conformance pack and NIST 800-53 Rev. 5 in Security Hub for continuous compliance evaluation
• Maintain audit logging continuity at infrastructure (CloudTrail) and data plane (OS/database logs) layers across replication, testing, and cutover phases
• Enforce immediate post-cutover revocation of operator-facing IAM policies and KMS grants to limit access window
• Configure VPC Flow Logs capturing all traffic (accepted/rejected) with centralized delivery to integrity-protected Evidence S3 bucket
• Establish AWS Backup with vault lock immediately post-cutover to satisfy HIPAA contingency planning requirements

This pattern enables healthcare organizations to migrate regulated workloads at scale while maintaining continuous compliance controls and audit evidence integrity throughout the migration lifecycle.