Purpose of COmanage-Registry:
Federated ID is a method by which one can authenticate to Web pages or services. As users of the SDCC, you are already doing this using the SDCC federation (your Kerberos account(s) and password(s) along with a second factor). Federated IDs however offer the possibility to merge multiple identities and map them into one single user. A COmanage registry is the core infrastructure component that will combine multiple Identity providers (IDPs) to a single identity. So you can log in with your CERN account or your SDCC account, BNL account, etc.