olemus
(2c1) abinõu eesmärgi saavutamiseks
= a means to achieve the objective
Wiktionary:
5. (project management) a means of monitoring for, and triggering intervention in, activities that are not going according to plan

(2c2) infoturbes:
abinõu riski muutmiseks, = turvameede

(2c3) = juhtimismeede