What you need to know
Microsoft Office Long Term Servicing Channel for Windows and Office 2021 for Mac are available in public preview.
These versions of Office don t require a subscription, instead of being available as a one-time purchase.
Microsoft Teams will ship with these versions of Office rather than Skype for Business.
Microsoft Office Long Term Servicing Channel (LTSC) for Windows and Office 2021 for Mac are now available in public preview. These new versions of Office don t require a subscription but also don t receive any new features. They re intended for regulated devices that can t get updates for years at a time, devices that aren t connected to the internet, and systems that must stay locked in time.