In order to understand BB and Microsoft 365 we need to We need to understand the HYBRID.
"Digital technologies are presenting enterprises with new ways of doing business," said Wangui McKelvey, General Manager, Microsoft 365, Microsoft. "Our customers choose Microsoft 365 for productivity and collaboration tools that deliver high productivity. Together with BlackBerry, we will take this to the next level and provide enterprises with the standard for secure productivity."
https://www.microsoft.com/en-us/microsoft-365/blog/2021/07/14/introducing-a-new-era-of-hybrid-personal-computing-the-windows-365-cloud-pc/
Introducing a new era of hybrid personal computing: the Windows 365 Cloud PC
By Wangui McKelvey, General Manager, Microsoft 365