Just one data point, but at Spotify we have almost all our stuff deployed in our data centers. ~10K machines, all bare metal, barely any virtualization, in a handful of sites.<p>It&#x27;s just cheaper and easier for us to have a lot of hardware racked and stacked and then spin it up as needed without having to worry about virtualization. Experience for our devs is pretty much the same whether they&#x27;re provisioning a bare metal machine as it would be for a VM.