Each user account consists of:


Microsoft Exchange Online, 

Such a mailbox can be a personal mailbox, an Online Archive mailbox or both — you will only need one license per user.


Microsoft OneDrive for Business, 

OneDrive for Business licenses are associated with email accounts. This means you cannot use the same license to back up one user's email and another user's OneDrive for Business account. 

(Consider that OneDrive (without for Business) is an independent storage service and is not supported by CloudCover 365).


Microsoft SharePoint Online,

Each SharePoint user in your Office 365 subscription that has been granted access to the SharePoint sites needs to be licensed to back up your SharePoint environment.


A license is not required for:

Shared, resource and group mailboxes

Group SharePoint sites

External SharePoint users



An external SharePoint user is a user from outside your Office 365 subscription to whom you have given access to one or more sites, files or folders.External authenticated users are limited to basic collaboration tasks, and external anonymous users can edit or view specific documents when given specific permissions.


Note: You must protect 99% of users in your tenancy on the unlimited storage options.