Amazon Database Migration Service vs Google Migrate to Containers

Amazon Database Migration Service (AWS DMS) is a SaaS service for moving relational databases, data warehouses, NoSQL databases and other data stores to AWS or between cloud and on-premises environments. It handles one-time migrations and continuous replication, with support for both like-for-like and cross-engine moves. AWS says more than 20 databases and data warehouses can serve as source or target endpoints. DMS Schema Conversion assesses schemas and converts many code objects, including views, stored procedures and functions, while identifying work that needs manual conversion. DMS Serverless provisions and scales capacity according to transaction volume, billed hourly. Multi-AZ deployment uses redundant replication instances, and interrupted migrations can resume. API and AWS CLI support automation, while CloudTrail and CloudWatch Logs provide integrations. TLS, VPC deployment, PrivateLink and column masking are available. At least one endpoint must be Amazon RDS or EC2; on-premises-to-on-premises replication is unsupported. The AWS Free Tier offers free with credits.

Google Migrate to Containers is a free, self-hosted tool for moving applications from virtual machines or servers into containers without rewriting or re-architecting them. Its local CLI copies a source VM file system, analyzes it, creates a migration plan, and generates deployment artifacts. It can optionally move data files to persistent volumes. Sources include VMware and Compute Engine VMs, and destinations include Google Kubernetes Engine, GKE Autopilot clusters, and Cloud Run. Supported workloads include Linux applications, IBM WebSphere, JBoss, Apache, Tomcat, WordPress, and Windows IIS applications. Linux workloads can be handled locally in offline mode or on a local network without runtime internet downloads. A local machine needs Docker and several gigabytes of storage. Google recommends assessing workload fit first. The console UI, migctl, and processing-cluster CRDs were discontinued in May 2024; Google directs users to the local CLI. Migration has no charge, while other Google Cloud services cost separately.