Re: "Mastering GDPR, Governance Security, and Compliance in Office 365" at £3,260 per head
I don't know about this particular course, but we've had some of the Office 365 courses run by Microsoft engineers (not trainers) and go into way more depth about the topic than is available in the standard docs. Those courses were not cheap but the staff who attended them rated them as some of the best they've every attended as the engineers knew their stuff and didn't blindly follow a PPT.