Storefront:

• For StoreFront, the credentials are verified directly to a Domain Controller. SF then passes the validation over to the DDC to begin resource enumeration (Step 4). Note: StoreFront validates user’s credentials by default on its own. From Storefront 3, we can enable xml service based authentication, When StoreFront is not in the same domain as XenApp or XenDesktop, and it is not possible to put Active Directory trusts in place.
• StoreFront checks the data store for existing user subscriptions and stores them in memory.

Web Interface:

• For Web Interface, the username and password is passed to the Desktop Delivery Controller (DDC).