Global Office 365 design and storage


We have a global client with offices all over the world. The clients first O365 tenant was created as an asian tenant with O365 Exchange Online mailboxes as the initial service. Later on the European office migrated to the same O365 tenant placing their mailboxes in the same region (same tenant = same region = same mailserver with Microsoft).

Now in May 2018 GDRP regulation in EU means that all mailboxes need to be stored within EU, so our challenge is how can this be done? We still would want the client to preserve their global adress list, to have one common tenant if possible and global .com emaildomain. We would like to give the EU users a full O365 feature set of mailbox, teams etc but stored from EU datacenter in O365 if possible, but preserve the global .com domain and management.

Is this possible, any ideas on design? The client is a couple of hundred users.

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David Johnson, CD, MVPOwnerCommented:
Where personal data are transferred to a third country or to an international organisation, the data subject shall have the right to be informed of the appropriate safeguards pursuant to Article 46 relating to the transfer
The userdata that has PII doesn't have to entirely reside in the EU.

you may want to look at the compliance manager
Vasil Michev (MVP)Commented:
As David mentioned, GDPR does NOT enforce any requirements for data residency. That said, Microsoft will soon launch the "multi-geo" support for Exchange/SharePoint, allowing you to have a single tenant that spans across EU, USA, Asia, etc. Once that happens, you can move users data across, while at the same time preserving the collaboration options. You can contact your Microsoft TAM to get you started with the process.
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