All 7 AWS Database Migration Service & Application Migration questions
More in AWS Database Migration Service & Application Migration
What is AWS Database Migration Service and what problem does it solve? What is the AWS Schema Conversion Tool, and how does it work alongside DMS for heterogeneous migrations? How does DMS support continuous data replication using change data capture to minimize downtime during a migration? What migration strategies, commonly called the six Rs, are used when planning a large scale cloud migration? How can AWS Migration Hub provide centralized visibility and tracking across a large, multi application migration project? What are the key considerations for validating data integrity and application performance after completing a large scale database or application migration?
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What is AWS Application Migration Service, and how does it support migrating entire servers, not just databases, into AWS?

Intermediate

Answer

AWS Application Migration Service, often called MGN, uses continuous block level replication to copy entire on premises or other cloud servers into AWS, including the full operating system, applications, and data, allowing you to launch fully functioning EC2 instances that are exact replicas of your original servers with minimal manual reconfiguration, which is significantly less effort than manually rebuilding an application from scratch in the cloud.
aws mgn start-replication --source-server-id s-1234567890abcdef0
Real-world example An enterprise migrating dozens of legacy application servers from an on premises data center uses Application Migration Service to continuously replicate each server into AWS, then performs a test launch to validate everything works correctly before cutting over production traffic.

Common follow-ups: How does Application Migration Service differ from AWS Database Migration Service in terms of what they migrate?;What is involved in the cutover process once replication is complete?

EC2 & Compute;AWS Backup & Disaster Recovery
All 7 AWS Database Migration Service & Application Migration questions