what is umbrella
What is Umbrella (for users). Umbrella is a federated identity system for the users of the (European) large neutron and photon facilities.Identity system: Umbrella allows providing these users with a unique, persistent identity.hat is Umbrella (for users). Umbrella is a federated identity system for the users of the (European) large neutron and photon facilities. Identity system: Umbrella allows providing these users with a unique, persistent identity.