Within each Site, although you can use earlier versions of VDA or Delivery Controller, all the features in the latest version of Director might not be available. In addition, feature availability depends on the Site license edition. Citrix recommends having Director, Delivery Controller and VDA at the same version.
Note: After you upgrade a Delivery Controller, you are prompted to upgrade the Site when you open Studio. For more information, see the Upgrade Sequence section in Upgrade a deployment.
The table below lists Director features and the minimum version of Delivery Controller (DC), VDA and any other dependent components required along with License Edition.