Mostly agree but proxmox still has quite a few quirks. Its cloud-init support is difficult to use unless you just need hostname and single user and single NIC

Mostly agree but proxmox still has quite a few quirks. Its cloud-init support is difficult to use unless you just need hostname and single user and single NIC which does cover a lot of cases but not mine. Its web api is non-standard and cannot upload full cloud-init config files but requires files already on disk. Also no Docker, just LxC. I found ESXi free tier better for test lab for somethings like backup and snapshots but no creating vms from scratch via api was an issue which is why I used Proxmox in first place.