netboot.xyz is great! My main use case is to boot things off of drac/ilo etc. If you have a remote server hosted in a datacenter and have struggled to use drac's virtual iso feature, boot the netboot iso. Since it's tiny, it works great for booting, and it switches to the primary NIC once the OS is booting. If you try to use your full iso with drac, it will be painfully slow because it goes through several layers of indirection (reverse proxies set up by your provider, the weird drac driver etc.)