Which solution will accomplish this?
Copy the EC2 instance to a different Availability Zone. Terminate the original instance.
Create an Amazon Machine Image (AMI) from the EC2 instance and launch it in a different Availability Zone. Terminate the original instance.
Move the EC2 instance to a different Availability Zone using the AWS CLI.
Stop the EC2 instance, modify the Availability Zone, and start the instance.
Explanations:
EC2 instances cannot be copied directly to a different Availability Zone; they must be created from an AMI. Terminating the original instance before confirming the migration would result in data loss or downtime.
Creating an Amazon Machine Image (AMI) of the EC2 instance allows the instance to be launched in a different Availability Zone. After verifying that the new instance is functioning correctly, the original instance can be terminated safely.
There is no functionality to move an EC2 instance between Availability Zones using the AWS CLI or any other method; instances can only be created from AMIs in a different zone.
EC2 instances cannot be directly modified to change their Availability Zone. They must be recreated in the desired zone using an AMI or other means. Stopping an instance does not allow for a change in Availability Zone.
I have a feeling that the answer is:
Create an Amazon Machine Image (AMI) from the EC2 instance and launch it in a different Availability Zone. Terminate the original instance.