Want to try again, but a little concerned that AWS seems to have moved away from Xen.
One of the points that look like a plus to me, was that Qubes OS was based on a widely used, battle tested hypervisor, Xen.
The biggest cloud platforms looks like AWS, Google Cloud Platform (GCP), and Microsoft Azure. I should check if what hypervisors they are using.
The hypervisors for preparation that are covered in this article are Hyper-V, kernel-based virtual machine (KVM), and VMware.
KVM
This section shows you how to use KVM to prepare a RHEL 6 or RHEL 7 distro to upload to Azure.
> Maybe this means that Azure is not using KVM, and only uses Hyper-V, but it can import KVM images?