olemus
Wiktionary:
a business office that is geographically separate from the headquarters of the business

näide
ISO/IEC 27033:
organisatsiooni kontor, mis on
peakontoriga ühendatud kaugvõrkude kaudu,
nii et need annavad kasutajaile
igapäevaseks tööks vajalikke teenuseid,
näiteks failiteenuseid, prinditeenuseid
=
office externally connected to the organization's main office through remote networks to provide users with services (e.g. file, print and the other service) required to maintain their daily business routine

ülevaateid
https://en.wikipedia.org/wiki/Branch_office

https://cleartax.in/s/liaison-project-branch-office-comparison