Requirement from customer (ENEL) is quite simple.
The KM collect the "InstanceID" from AWS and not the "Instance Name".
In AWS both information are provided and potentially could be collected.
Requirement is to have both info (Instance ID + Instance Name).
Instance ID is not enough because it is just an alphanumeric sequence and it is not "clear" what is the "system" you are watching.
If you have a huge environment with many instances, the "Instance ID" is not enough to identify the system, you need the "Instance Name" also.