To help prevent the failure of a migration job to AWS, you must adopt the following best practices when you configure migration jobs:
If you use a static IP address for the network, ensure that the address is unique within the supported subnet range.
The number of target instances running at any point of time must not exceed the instance limit applicable for your subscription.
You must select a subnet such that the replication, run cutover, and test cutover instances are all in the same availability zone.