This means exactly the same thing as Application and we also talked about it meaning much the same as App and web app.
As best I can remember the name began to be used around the time Microsoft introduced Visual studio.
Of course we all know what happened to the hapless word after that. “The Man with van” nearby has branded himself an “expert in Logistics solutions”. Ultimately, in a tech conversation, it just means a system or application.

The “Explainned series” is planned to build into a trustworthy collection of explanations and commentaries that can be trusted to tell the story straight without any bias and attempt to make the subjects accessible to the layman. The latter is not always easy as some of these terms refer to genuinely complex subject matter, while others are simply too vague to pin down (there’s another word for that).
If you want an answer on something and you can’t find it easily, please use the comments section to just ask and I will apreciate not having to research the next topic.