Rich Media third-party tracking
Third-party tracking URLs help you integrate Rich Media creatives with reporting and analytics outside of DCM or DFP Premium.
Use event tags for launching surveys or implementing third-party click or impression tracking. Visit the DCM help center to learn how to set up event tags.
Add your brand study URLs to the Survey URL field in your creative's "Settings" tab. Visit the DFP help center to learn more about third-party reporting.