olemus
Merriam-Webster, noun:
1a: the act or process of deciding
the moment of decision has come

decision gate -- otsustuspunkt
decision outcome -- otsustustulem
decision record -- otsustusandmik
decision rule -- otsustusreegel
decision statement -- otsustuslause
decision table testing -- otsustuslause
decision testing -- otsustuste testimine