The TFS integration synchronizes work items between Team Foundation Server or Visual Studio Team Services (VSTS) and CA Continuous Delivery Director. This allows TFS and VSTS to be used as any other content source for a release in CA CDD. Content synced includes features, epics, code review requests, tasks, test cases, and bugs.
The TFS plug-in supports TFS 2017 and above.
To learn more about TFS, see https://www.visualstudio.com/tfs/
To learn more about VSTS, see https://www.visualstudio.com/team-services/