News and updates from DockerCon 2015

It's more than a *little* hardware efficiency. As an example, I can easily run four to six containers on my ultralight laptop and still do a presentation with LibreOffice slides. Whereas, if I run *one* VirtualBox VM, that's pretty much all I can run. In production, this means running 4 to 40 containers per machine, instead of 1 to 4 VMs.

So to rephrase: "giving up some flexibility for order-of-magnitude better hardware efficiency," which seems like a reasonable tradeoff. Sometimes you need a full VM, but often you don't.