See https://en.wikipedia.org/wiki/Inversion_of_control https://en.wikipedia.org/wiki/Inversion_of_control and https://en.wikipedia.org/wiki/Dependency_inversion

See https://en.wikipedia.org/wiki/Inversion_of_control https://en.wikipedia.org/wiki/Inversion_of_control and https://en.wikipedia.org/wiki/Dependency_inversion_principle https://en.wikipedia.org/wiki/Dependency_inversion_principle And don't overthink it. You've probably seen this a million times in your work life. The description is indeed not great. It's not always about not having to recompile, but can be (see eg dependency injection)