It is available from IBM BPM 8.5.7 onwards
IBM® Process Federation Server is an optional component for IBM BPM environments. Install this component to create a federated process environment that provides business users with a single point of access to their task list and launch list, regardless of the type of process that they are working on and the IBM BPM back-end system on which the process artifacts are stored.
Consider installing Process Federation Server in the following situations:- Your process applications are deployed on different IBM BPM deployment environments. Your users must log on to several different instances of Process Portal to get their work done.
- Your users work with both BPD-related and BPEL-related processes and tasks.
- Your IBM BPM environment contains multiple versions of IBM BPM that each runs a different version of the same process application. Your users need to work with the older versions of the process applications while process instances are still running, which means that they need to log on to the Process Portal or Heritage Process Portal application that runs on the associated version of IBM BPM.
- Excerpt from IBM
- https://www.ibm.com/support/knowledgecenter/en/SSFTN5_8.5.7/com.ibm.wbpm.main.doc/topics/cbpm_fps.html