A profile on the OrganizationAffiliation resource for mCSD in Document Sharing. Karen's Cross, when expanded to either/or a service that translates protocols, or a proxy that mediates network communication.

Not used for direct connected mesh networks of depth 2 as that is handled fine with Organization->Endpoint.

Affiliation is used to show Document Sharing network linkage to a set of communities that are not directly addressible.
The participating organization would not have Organization->Endpoint advertised in the network directory. There will be many OrganizationAffiliations, one for each pathway provided on the network by the serving organization (.organization) to another organization (.participatingOrganization).