First version of Office 365 Reports having Exchange Online module and SharePoint Online module.
Exchange Online module helps the user to view various settings pertaining to Exchange Online objects like Mailboxes, Mail Items, Public Folders, Contacts, Groups.
SharePoint Online module helps the user to view configuration, security and inventory information various SharePoint Online objects like Sites, Lists, List Items. Provision to schedule the available reports to run at the desired time intervals.
You can find the detailed reports under List of Reports section.