The following types of data can be backed up:

  • Exchange Online
    • Mail (including In-Place Archives as known as Online Archives)
    • Contacts
    • Tasks
    • Calendar Appointments
  • OneDrive
  • SharePoint Online (Sites)
    • Document Libraries of Classic Sites
    • Document Libraries of Communication Sites
  • Office 365 Groups
    • Conversations
    • Calendar 
    • Notebook
    • Planner 
    • Files 
    • Team Sites

NoteSharePoint Online and Office 365 Groups are not related to any specific accounts, so if you select Sites or Office 365 Groups, all the data in these sites or groups will be backed up.

To choose what to back up, see: How to configure your backup