On Microsoft Enterprise Services' Privacy Page you can request and collect all the privacy and GDPR related information that Microsoft Enterprise Services is providing.
The privacy policy by is a legal document or statement that discloses how Microsoft Enterprise Services gathers, uses, discloses, and manges their customers' data.
The basis for Microsoft Corporation sharing, adding, uploading, hosting, accessing or sending personal data out of Europe. Vendors can also add a description of their own impact assessment for data transfers.
Subprocessors are companies that provide a service for Microsoft Corporation and who has or potentially will get access to personal data of their customers.