Virtual machines – where would we be without them? Since the late 2000s they’ve taken over great swathes of the internet, as data centre beancounters realised that it was much more efficient for one server to host a bunch of VMs than be dedicated to a single workload. And thanks to the underlying tech, workloads remain isolated and can be easily shifted to new hardware.
They’re big business, too. It wasn’t too long ago when Amazon sold books, but now by far its biggest market is web hosting and a great deal of this rapid scaling has been due to virtual machinery. If you want to try your hand at running a remote server, there’s no shortage of companies offering modestly spec’d VPSes (Virtual Private Servers) for as little as $5/month.
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