Microsoft Office 365 E3 is the mid-tier plan for Office 365 users. E3 includes all the features of E1 in addition to the full desktop suite of Office 365 applications and greater cloud storage space. The E3 subscription gives you access to the latest Office applications on up to 5 devices, plus 5 TB of OneDrive storage.

Microsoft Office 365 E3 is the middle option for Office 365 users, including all the features of E1, with the full desktop suite of Office 365 applications and greater storage for email and SharePoint. Office 365 E3 can broadly be considered the “Goldilocks” plan: it’s not too basic and not too advanced.