In July,Google introduced a Data Transfer privilege in the Admin console, which we indicated would be required to use the soon-to-launch Data Transfer API. We’re excited to announce that that API is now available! It allows admins to programmatically transfer ownership of Google Drive content and Google+ pages—in bulk—from one employee to another. For more details on the API, please refer to our post on the Google Apps Developer Blog.

Launch Details
Release track:

Launching to both Rapid release and Scheduled release

Rollout pace:

Full rollout (1–3 days for feature visibility)

Impact:

Admins only

Action:
Admin action suggested/FYI

More Information
Google Apps Developer Blog