Do they mean PAAS vs IAAS when they say "move to cloud"?
Developers want to use PaaS and also AWS or Azure so they can put it on their resume for the future.
I think this is a little disingenuous. Developers want to use them because they already know them. The services composing them are also often well documented by the provider.
I say all of that as someone trying to move a company away from aws, and over to our own hardware.
Also managing a cloud infrastructure is a lot more complex than running Debian and Ansible on a VM.