All about virtualisation
Virtualisation is one of the most exciting projects to come out of the modern-day computing world. As most of us have a PC, we can successfully run a variety of different operating systems from within the comfort of our favourite desktop. Whether it’s a Windows host, running the latest Ubuntu or a Slackware host running a copy of Windows 8, the possibilities are almost endless.
However, for most OS emulators and virtual machines, we're stuck with using the same x86 combinations within the likes of VirtualBox or VMWare (although there are exceptions). To emulate different CPUs and architectures, we need something different, such as QEMU.