One of the cooler new features in KVM/libvirt is using "direct access" Ethernet devices (where the host creates, in essence, a kind of alias on an interface that the guest has direct access to), ...

So I am having a bit of an argument with a colleage. He thinks it is perfectly okay for our smallish outfit to use nothing but Linux + Libvirt + KVM to manage "one-off" needs like hosting backup ...