15f1c436_SharePoint_MCTS___MCPD___MCITP__Purpose
[Service] Claims to Windows Token Service (C2WTS) [Comments] Required for Kerberos when used with BI Tools.Requires some manual steps: http://technet.microsoft.com/en-us/library/hh231678.aspx [Purpose] 
Used to convert SharePoint Claims back into Windows Tokens for Kerberos delegation.
Martin Hatch - SharePoint Evangelist | SharePoint MCTS | MCPD | MCITP
Purpose