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Google Cloud's Compute Engine uses KVM as the hypervisor. Nuff said in terms of longevity, security and support. The other advantage and reason I settled on KVM is that unlike other hypervisors it works with pretty much any hardware (which I found out the hard way trying to get my old Dell laptop working with other options first).
What is outlined here can be considered foundational home Cloud to gain an under the hoods look at Google Cloud engine.
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Setup Ubuntu Server on Dell Laptop laptop (really don't use Dell because it has various challenges... ).
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