Since June 2011, Office 365 has been the destination for many Exchange, Skype for Business and SharePoint migration projects. Depending on the range of estimates, somewhere between 20-50% of all Exchange mailboxes are currently run from Exchange Online in Office 365.
Moving your organization’s Exchange, Skype for Business and SharePoint services to Office 365 solves a lot of problems, but it can also create complications. One problem that Office 365 makes more difficult is getting your data out of the service, or re-configuring your data to another tenant within Office 365.