The Citrix Connection Center displays all connections established from a Citrix online plug-in. You use plug-in software to access applications, server desktops, or content (such as documents or presentations) published by an administrator. All the items you can access from the plug-ins, collectively referred to as published resources, are stored on Citrix XenApp servers. Each group of servers is referred to as a server farm.
The Citrix Connection Center shows the currently open sessions.