Office 365 Government application services
Office 365 Government services are provided from datacenters physically located in the United States. The following customer content is stored at rest in datacenters physically located only in the U.S.A:
Exchange Online – mailbox content (email bodies, calendar entries, and the content of e-mail attachments)
SharePoint Online – site content and the files stored within that site. The Site usage page for SharePoint sites is available for government plans, though per compliance, there are some features of this page that are only available to commercial customers.
Skype for Business – archived conversations, uploaded documents, and whiteboarding sessions
Microsoft Teams – persistent chat threads With typical use, Skype for Business does not store customer content, but if such storage occurs, it will be stored in datacenters in the U.S.A.
Office Web Apps – If your users are located within the U.S.A. while using Office for the web (formerly known as Office Web Apps)
ADFS – if you adopt the use of Active Directory Federation Services (AD FS) 2.0 and set up policies to help ensure your users connect to the services through single sign-on, any customer content that is temporarily cached in Office for the web will be located in the U.S.A.