Good question Rüdiger.
To make it very simple, We are using CRM system for sales and service and HCM for internal employees. We want Employee collaboration on single point using JAM. The main objective of JAM interface is, employees need to get connected to share Ideas, use Decision Making Tool & Discussion Forum about Business Matters etc.
secondary objective is to expose SAP CRM Tasks/Activities to SAP JAM. And sync between SAP CRM Tasks/Activities to SAP JAM Activities.
Regards
Hamid