There’s a lot of tools that can help you migrate IN to Office 365.
It would make sense those same tools can get you back OUT.
Office 365 is built on industry leading platforms that have been around for quite some time – so the data formats and utilities available can definitely be used for both importing and exporting of your data.
No cloud lock-in – period.
Read more: http://www.boxfreeit.com.au/Productivity/getting-out-of-office-365.html