olemus
süstemaatiline üleminek uuele
(süsteemile, tarkvarale, versioonile, protseduurile)

Oxford Languages:
a rapid transition from one phase of a business enterprise or project to another

Cambridge Dictionary:
IT: a change from old computer systems, equipment, etc. to new ones

ülevaateid
https://www.plutora.com/blog/cutover-plan

https://www.projectmanagement.com/blog-post/24655/Project-Cutover-A-vital-step-in-Project-Go-Live-

http://mason.gmu.edu/~afinn/html/tele/management%20chapters/TM28.htm