migrate to office 365

Office 365 has rebranded to Microsoft 365 for most plans, but the E3 and E5 licenses remain under the Office 365 banner. In short, small and medium-sized organizations use M365 while larger enterprises use O365 (although O365 can still form part of advanced M365 tenants). If that’s left you scratching your head, check out this detailed breakdown comparing Office 365 vs. Microsoft 365.