"2016 and beyond: the "abstraction level" of IT thinking has moved beyond "file & print server" and also beyond "app server" to the "cloud as the operating syst

"2016 and beyond: the "abstraction level" of IT thinking has moved beyond "file & print server" and also beyond "app server" to the "cloud as the operating system"." I think you forgot about WYSE, which did this back in the 90s and earlier 2000s.