Question

A retail company is using AWS Application Migration Service (MGN) to rehost 60 Linux application servers from an on-premises data center to Amazon EC2. Continuous block-level replication has been running for two weeks and all source servers show a 'Healthy' replication status. Before the scheduled production cutover weekend, the migration team must validate that each migrated application boots correctly and passes functional tests without disrupting the ongoing replication or affecting the production source servers. Which approach meets these requirements with the LEAST operational effort and risk?

Accepted Answer

Launch test instances from MGN using the current replication state, run functional tests in an isolated test subnet, then terminate the test instances and continue replication until the final cutover.

Answer

Perform a cutover launch for all 60 servers into production, run the functional tests there, and roll back by re-installing the MGN agents if any tests fail.

Answer

Stop replication temporarily, create AMIs from the staging area volumes, and launch validation instances from those AMIs while replication is paused.

Answer

Use AWS DataSync to copy the application files to new EC2 instances for testing, keeping MGN replication reserved only for the final production cutover.