olemus
ISO/IEC 2382-14:
hooldus, mis põhineb teatud reguleerimisskeemil, millega saab soovitud teenusekvaliteeti hoida väiksemate või minimaalsete pingutustega
= maintenance based on a control scheme according to which a desired quality of service can be sustained with minimal or reduced maintenance efforts

ülevaateid
https://www.lawinsider.com/dictionary/controlled-maintenance
https://www.goodreads.com/book/show/15107267-principles-of-controlled-maintenance-management