UNIX world had sandboxing via stuff like Tru64 and HP-UX vaults, while the cloud kind stuff kind of traces back to IBM System 360 capabilities, later improved in z/VM.
Yes true with VM/370 (today called z/VM) released in 1972, but it's not directly the same, however pretty impressive what IBM did (in the past)
One can test-drive it from here:
http://www.vm370.org/vm
UNIX world had sandboxing via stuff like Tru64 and HP-UX vaults, while the cloud kind stuff kind of traces back to IBM System 360 capabilities, later improved in z/VM.