The GEANT Service Provider Proxy for OCRE (OCRE GEANT SP Proxy) is a service provided by GEANT with the purpose of enabling Cloud Service Providers which participate in the OCRE framework to authenticate users at Academic Identity Providers and/or Community Authentication and Authorization Infrastructure Services in the context of the European Open Science Cloud through the eduGAIN Interfederation Servicethat allows GEANT Services to use federated authentication for identifying users from Academic Identity Providers.