Back in the days you only had IT, This slowly changed to ICT (Information Communication Technology) This branched of in 3 separate things ICT/IT, NSE (Network security engineering) and (SE) Software engineering. IT people where needed less and less because we prefer throwing things away instead of fixing it. So after a while they came up with the idea to still keep IT people around but to use them for other things when they are not busy. And they called it DevOps.