
Obligatory...
"It's Dead, Jim"
In around 2013 Citrix stopped trying to keep up with VMware and Microsoft in the server virtualisation market. The company therefore slowed development of its XenServer hypervisor, but kept it alive and suggested it as a fine underpinning for its own products –especially for virtual desktops – but not as the foundations of a …
I had a big No-oooooo! moment there until I twigged it was just Citrix's layered thing.
(Removing functionality as an "up"grade? They've gone full Apple.)
I used to hammer Xen a few years back when I was #2 tech guy in an ISP + Managed Services Provider. It's ugly as hell but MAN is it impressive.
VMs running at a 3% penalty to the bare metal.
*THREE* percent!!!
I did XEN before Citrix thought it was a good idea, compiled the kernels, jumped the hoops.
A bit later it dawned on me, as it should on any thinking body in this cursed industry: Virtualising, massive amounts of closed source binaries (aka Windows), ad infinitum, is an completely idiotic and a massive "WORK HARDER NOT SMARTER" waste of resources!
Do the applications right instead! You fucking simpletons!
PS: Containers are based on the same idiocy, with a slightly smaller footprint (in the short run)