It's like every other broad movement in IT. It starts with very smart people taking a look at the processes and outcomes they are using and deciding they are b

It's like every other broad movement in IT. It starts with very smart people taking a look at the processes and outcomes they are using and deciding they are broken. They come up with some solutions and some tools to support their new processes and start sharing them with their peers. The new techniques have some notable successes and several members of the original group find themselves drawn into teaching/evangelizing the new methods. To make communication easier catchphrases and buzzwords intended to be a shorthand for a suite of methods become popular. Buzzword compliance becomes a checkbox feature for groups, companies and individuals each of whom have varying levels of skill and understanding and the buzzwords become diluted and more closely associated with specific tooling. At this point the original group is crowded out by people who are serial evangelists, and enterprise sales become more important than sharing knowledge with peers. Job descriptions start to lose contact with reality. The movement becomes mainstream as a grotesque caricature of itself driven mostly by the greed-fueled hype train. At which point someone looks around and declares that the processes are broken... and the whole cycle repeats. See: object-orientation, agile, scrum, devops, etc.