From requirements through release, we build the applications off-the-shelf software can't cover, and the same team maintains them afterward.
Most custom applications decline after the builders leave. Ours don't go through that handover, because the engineers who wrote the code are the ones who support and extend it.
A team asks the same question before and after Custom Application & Product Development is in place. The answer depends on whether the team that built the app is still there.
The app works. Nobody left knows how.
Same app, same request. The difference is the team that stayed.