isbaremetal

Virtualisation hosts.
You bring the hypervisor.

Proxmox or VMware ESXi, or anything else you can boot from an ISO. We hand over the metal, the console and the addresses; the stack on top of them is yours.

hypervisor
Proxmox, VMware ESXi, or an image you bring
installation
mount your own ISO over IPMI
console
IPMI — down to BIOS and boot order, not just SSH
cpu
Intel Xeon or AMD EPYC
memory and disks
sized with the build
addressing
2 × IPv4 + native IPv6 · extra IPv4 $5/mo
access
root and IPMI
locations
AMS · NL · MEP · NL · IAD · US-EAST · PHX · US-WEST
delivery
a few hours to 7 business days

A custom build more often than not: guests ask for memory and disks long before they ask for cores, and the stock list is sized the other way round.