Re: How is this different?
As the article says:
"The German operator's T-Systems subsidiary will handle the data trustee functions, managing all access to customer data in the Microsoft data centres. “Microsoft will not be able to access this data without the permission of customers or the data trustee, and if permission is granted by the data trustee, will only do so under its supervision”, the announcement states.
Since Microsoft won't be in charge of the data, even an unfavourable decision in its US court case (in which the Feds want access to e-mails stored in Ireland) won't expose German customer data to American courts or law enforcement."