On IBM Watson IoT Platform's Privacy Page you can request and collect all the privacy and GDPR related information that IBM Watson IoT Platform is providing.
The privacy policy by is a legal document or statement that discloses how IBM Watson IoT Platform gathers, uses, discloses, and manges their customers' data.
The basis for IBM 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.