AWS Transform MGN (formerly AWS Application Migration Service) review
A focused AWS service for orchestrated server rehosting with replication, testing, and cutover.
Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
AWS Transform MGN is a managed service for rehosting applications and servers to Amazon EC2. It is designed for migrations from physical, virtual, or cloud infrastructure, including on-premises workloads, other public clouds, and moves between AWS Regions, Availability Zones, or accounts. The service combines agent-based replication for supported Windows and Linux servers with automated conversion into EC2 instances, making it a focused option for teams standardizing workloads on AWS.
Its migration workflow covers more than copying server data. Continuous block-level replication keeps source changes moving, while orchestrated testing and cutover provide structured stages before workloads are switched over. Cloud Migration Factory adds migration-wave orchestration, and the product includes an AI-driven automated rehosting workflow. Together, these capabilities suit projects where repeatable execution, controlled cutovers, and support for mixed physical, virtual, and cloud sources matter more than broad destination flexibility.
The commercial model is paid, with a 90-day free period per server. AWS infrastructure such as EC2 and EBS can incur charges during replication, testing, and cutover, so the migration budget includes more than the service itself. AWS Transform MGN is a strong fit for organizations committed to Amazon EC2 and seeking a structured rehosting path with testing and orchestration. Teams needing a destination outside EC2, or replication beyond the supported Windows and Linux agent model, should consider a more destination-agnostic migration tool.
AWS Transform MGN (formerly AWS Application Migration Service) pros and cons
- Where it wins
- Continuous block-level replication supports migration with minimal downtime
- Orchestrates testing and cutover for controlled migration waves
- Supports physical, virtual, cloud, Windows, and Linux source servers
- Where it doesn't
- Targets Amazon EC2 rather than a broad range of destination platforms
- Agent-based replication applies to supported Windows and Linux servers
- EC2 and EBS charges can apply during replication, testing, and cutover
AWS Transform MGN (formerly AWS Application Migration Service) fact sheet, pricing and score →
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