AASAService - what does this do?

So a search for AASAService brings up a lot of results with this being a program to disable to "debloat" a Samsung phone.

However, no one seems to know specifically what it does. There are just vague guesses.

Does anyone know?

I once had it draining my battery like mad. I disabled it for a week, battery was better. Enabled it, never caused another problem.

Nothing seemed to stop working when it was disabled.

Any ideas?