On Google Cloud Virtual Network's Privacy Page you can request and collect all the privacy and GDPR related information that Google Cloud Virtual Network is providing.
The privacy policy by is a legal document or statement that discloses how Google Cloud Virtual Network gathers, uses, discloses, and manges their customers' data.
The basis for Google Cloud Virtual Network 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 Google Cloud Virtual Network and who has or potentially will get access to personal data of their customers.