GDPR comes into force on May 25, 2018. To help Office 365 tenant administrators respond to GDPR data subject requests, a new DSR case feature is available as a preview in the Security and Compliance Center. The feature is based on the existing eDiscovery case and content search functionality, so it should be very familiar to anyone who has searched Office 365 for email, documents, and other information. https://www.petri.com/processing-gdpr-data-subject-requests-office-365
As far as I am concerned, a DSR may come from employee, ex-employee, or member of the public. But this tool only deals with the first of these use cases - I have to specify someone who has an account to search against. Or have I missed something?