System Center 2012 - Orchestrator includes over 41 built-in workflow standard activities that perform a wide variety of functions. You can expand Orchestrator’s functionality and ability to integrate with other Microsoft and third-party platforms and products by installing integration packs. Integration packs for Orchestrator contain additional activities that extend the functionality of Orchestrator.

http://technet.microsoft.com/en-us/library/hh295851.aspx

You can download integration packs from the Microsoft Download Center. Each integration pack has a guide that provides installation instructions, describes any known issues, and includes reference information for all of the activities supported by the integration pack.

Microsoft provides integration packs for all of the System Center products, as well as other Microsoft and third party products and technologies.

The following integration packs are available:

Active Directory Integration Pack for System Center 2012 - Orchestrator

HP iLO and OA Integration Pack for System Center 2012 - Orchestrator

HP Operations Manager Integration Pack for System Center 2012 - Orchestrator

HP Service Manager Integration Pack for System Center 2012 - Orchestrator

IBM Tivoli Netcool/OMNIbus Integration Pack for System Center 2012 - Orchestrator

VMware vSphere Integration Pack for System Center 2012 - Orchestrator

Integration Packs for System Center