You may have ran across new Office 365 usage reports for SharePoint, OneDrive for Business, Yammer, and Skype for Business. If you haven’t, I recommend you take a look. These new reports give IT admins more insight into how their organization is using the service.
Read more at source: https://blogs.technet.microsoft.com/uspartner_ts2team/2016/05/24/new-usage-reports-for-office-365-rolling-out/