[weitzj]

KVM for the VCS, otherwise bare metal. See their faq.

It gets weird if you would like to pass additional kernel parameters during boot. My hope right now is that this might be possible via their API but not their website.

You can select a precompiled kernel from which you want to boot your system. If you need other kernel features, you tell them so they add these.

Machines boot via ipxi and fetch the kernel. Once kernel is loaded the system is handed off to your rootfs.

You can install Windows on a bare metal machine, if you install a proper hypervisor. I tried it using KVM with Proxmox. I did not try nested KVM.

I have read something/somewhere about Ubuntu MAAS, but I am not sure how this fits in.