aws ec2 create-image :-D In all seriousness, I would guess this requirement has a hidden 80/20 in it because it is very unlikely that one wishes every machine

aws ec2 create-image :-D In all seriousness, I would guess this requirement has a hidden 80/20 in it because it is very unlikely that one wishes every machine to be a perfect copy of each other, unless the config files have been very, very disciplined about the hard-coded strings and assumptions made So even in my glib "create-image" response, even then there's almost certainly going to be some cloud-init that subsequently stamps the booted instance with its actual identity