Think of this as Volume 15, Number 34 of A-Clue.com, the online newsletter I've written since 1997. Enjoy.
Information Technology, or I.T., often simply IT, has generally been a balance between central resources and the user.
In the mainframe era, the user had to be right next to the central computer to get anything out of it. I am actually old enough to remember standing around in a room, while a DEC minicomputer hummed under air conditioning nearby, waiting for a print-out to tell me if my feeble program had run. (It hadn't.) In response to this "output," I had to change my "input." I had to make new punch cards, on a typewriter, after editing my program on paper. With a pencil.
Local Area Networks, and the original Internet, gave people some distance from their computers in the 1970s. The creation of a standard user interface -- a TV screen for output, a typewriter for input, floppies for storage -- helped. By 1979 I had a neighbor who had installed a $20,000 Cromemco in her living room, connected via phone lines to $5,000 terminals at employee homes, all typing court transcripts at $1 per printed page.
The LAN era got us through the 1980s, and the Internet was really an extension of that, only with different standards. The two ends of the barbell remained the same -- a server in a room (sometimes a closet) on one end, a client on a TV with a typewriter on the other. The balance was constantly shifting, as first clients got more powerful, then servers.
By the turn of this century there were really three balance points on the barbell. There was still the TV-typewriter on one end, there was still the Internet on the other, but between there were "enterprise systems" of various sizes, ranging from managed server farms to simple servers in storage closets. All three parts of the system grew in size, complexity, and expense, for hardware, software, and services.
The last five years have seen a complete transformation of this balance.
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