It's for organisation of information and it's an Emacs "mode".

It's as much "emacs with some configuration tweaks" as VS Code is "chromium, with slightly improved <textarea>".

W.r.t. the good question in a comment that definitely has more than just that, yes, there are partial ports of Org mode to vim, VS Cod{e,ium}, and AFAIK Sublime Text, but Org does make use of some facilities of Emacs that are not as easy to replicate on these editors. For exporting, Pandoc can help to some extent, but it's imperfect and not as configurable.