Amazon Database Migration Service review
A strong AWS choice for heterogeneous migrations, CDC, and database assessment.
Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
Amazon Database Migration Service is a managed cloud service for moving and replicating relational databases, data warehouses, NoSQL databases, and other data stores. It is designed for organizations migrating between on-premises environments, AWS services, and supported endpoints, including both homogeneous and heterogeneous database migrations. Teams can use it for one-time transfers or ongoing change data capture replication when planning lower-downtime cutovers. The service is available through the AWS Management Console, APIs, and related AWS services.
Pricing is organized around migration capacity. On-demand instances charge by the hour without long-term commitments. AWS DMS Serverless charges for capacity used and automatically provisions and scales migration capacity. Database Savings Plans offer savings in exchange for a usage commitment. The service is paid and does not include a free plan, so the appropriate option depends on whether migration demand is variable, consistently used, or suitable for a commitment. Its feature set covers database discovery, migration inventory, schema conversion, conversion assessment reports, one-time migration, and ongoing replication.
AWS DMS fits especially well in AWS environments that need operational integration. It connects with Amazon RDS, Amazon EC2, Amazon S3, Amazon Redshift, Amazon Aurora, Amazon DynamoDB, CloudFormation, CloudWatch, CloudTrail, SNS, Secrets Manager, and Key Management Service. Serverless capacity scaling, multi-AZ replication options, API and CLI automation, and monitoring through AWS services support larger or recurring migration programs. Organizations seeking heterogeneous database support and AWS-native automation should consider it; teams wanting a free migration tool or an ecosystem centered outside AWS should look elsewhere.
Amazon Database Migration Service pros and cons
- Where it wins
- Supports schema conversion, assessment reports, and migration inventory
- Handles one-time migrations and ongoing change data capture replication
- Integrates with core AWS services and supports API and CLI automation
- Where it doesn't
- Paid service with no free plan
- Capacity-based pricing can vary with usage and commitments
- Its listed ecosystem is centered on AWS services
Amazon Database Migration Service fact sheet, pricing and score →
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