Cloud, Visibility, and Security
Three great things that do not always work great together. In the beginning there were large computer systems that few organizations could afford. Over time these systems became smaller and cheaper and many (if not most) organizations took advantage of them. Some just at the end-user level (i.e. the IBM PC on the desk), some only at the high-end level (i.e. a mainframe in the data center with terminals on desks), and some in a combination of both (anyone remember Reflection?).