unified communications as a service
koondside teenusena, pilveltkoondside
= UCaaS
olemus
koondside pilvteenusena
ülevaateid
https://www.sangoma.com/what-is-ucaas/
https://en.wikipedia.org/wiki/Unified_communications_as_a_service
https://www.uctoday.com/unified-communications/ucaas/what-is-ucaas/
https://www.nextiva.com/blog/what-is-ucaas.html
https://www.gsa.gov/cdnstatic/UCaaS%20White%20Paper%202020.pdf
https://dbc.wroc.pl/Content/72982/Dziembek_Turek_Characteristics_and_application_of_Unified_Communications.pdf