Integration Packs are created using the Orchestrator Integration Pack Wizard. Integration Packs generally contain a set of functionality focused on a specific target area, such as a third-party product, a technology, or even a process-specific set of tasks.
Installation, license, removal and known issues information is published in a Readme file with each Integration Pack.
For More Information
See System Center 2012 - Orchestrator Integration Packs on TechNet.
Download Integration Packs from Microsoft Download Center.