Proxmox is awesome - VMs and containers with an API that just works. Network file system with a UI that just works. We once built an internal system to make ne

Proxmox is awesome - VMs and containers with an API that just works. Network file system with a UI that just works. We once built an internal system to make network solution demos in it - a VM image running Proxmox that would be configured with any number of other VMs and containers all inside of that image, so you could literally take the while demo environment with you on a USB stick when you presented it, work on it while on a plane etc. I also built a mini cloud on a Proxmox cluster using Ceph that would instantiate these images from a template using a web UI - a bit of Proxmox recursion fun. That was a cool project to work on. :)