Computers <i>do</i> run only one unikernel at a time. It&#x27;s just that sometimes they are virtual computers. Remember that virtualization is increasingly hardware-assisted, and the software parts are mature. So for many use cases it&#x27;s reasonable to separate concerns and just assume that VMs are just a special type of computer.<p>For the remaining use cases where hypervisors are not secure enough, use physical computers instead.<p>For the remaining use cases where the overhead of 1 hypervisor per physical computer is not acceptable, build unikernels against a bare metal target instead. (the tooling for this still has ways to go).<p>If for your use cass hypervisors are not secure enough, 1 hypervisor per physical machine is too much overhead, and the tooling for bare metal targets is not adequate, then unikernels are not a good solution for your use case.