“Yep. IT = “Interoffice Telecommunication””
To think...those that used to be lowly file clerks now tell businesses and governments how to do things, control their information and made Microsoft gigantic.
My wife had an assistant helping with purchasing at our local school district. Her husband worked at NASA Ames laboratory in Mtn View CA. Around 1983 or so, he took an engineering job with Boeing in Seattle and she took an office job at this then-small company named “Microsoft.” While he made some pretty good money, she made the family fortune!