Licensing of XenApp?

Like the previous version of XenApp, this version also utilizes a concurrent licensing model. With the concurrent model, each concurrent user consumes a single license while accessing one or more application and/or XenApp published desktops. A licensed concurrent user is only licensed for the period during which the access to the Citrix environment is required. Once access is terminated by the user, the license returns to the license pool and becomes available for other users to consume.