The ubiquitous and over-used term “use case” originated in software engineering and was popularized by Jacobson in the 1980s. ‘In 1987, Ivar Jacobson presented the first article on use cases at the OOPSLA’87 conference. He described how this technique was used at Ericsson to capture and specify requirements of a system using textual, structural, and visual modeling techniques to drive object-oriented analysis and design. Originally he had used the terms usage scenarios and usage case – the latter a direct translation of his Swedish term *användningsfall* – but found that neither of these terms sounded natural in English, and eventually he settled on use case.’
[https://en.wikipedia.org/wiki/Use\_case](https://en.wikipedia.org/wiki/Use_case)
by hiker201