A company runs a multi-tier web application with two Amazon EC2 instances in one Availability Zone in the us-east-1 Region. A SysOps administrator must migrate one of the EC2 instances to a new Availability Zone. Which solution will accomplish this?
A.
Copy the EC2 instance to a different Availability Zone. Terminate the original instance.
B.
Create an Amazon Machine Image (AMI) from the EC2 instance and launch it in a different Availability Zone. Terminate the original instance.
C.
Move the EC2 instance to a different Availability Zone using the AWS CLI.
D.
Stop the EC2 instance, modify the Availability Zone, and start the instance.
Answer is B!
It's not possible to move an existing instance to another subnet, Availability Zone, or VPC. Instead, you can manually migrate the instance by creating a new Amazon Machine Image (AMI) from the source instance. Then, launch a new instance using the new AMI in the desired subnet, Availability Zone, or VPC. Finally, you can reassign any Elastic IP addresses from the source instance to the new instance.
https://aws.amazon.com/premiumsupport/knowledge-center/move-ec2-instance/
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