1. A method comprising: providing, by an extensible data manager, a unified view of a plurality of storage systems to a plurality of single sign-on services, wherein each single sign-on service is associated with a web interface; receiving a data request, at the extensible data manager for a credential from a single sign-on service; identifying a storage system associated with the request; identifying a storage system plug-in corresponding to the storage system; retrieving data associated with the data request from the storage system through the storage system plug-in; and returning, to the single sign-on service, the requested data.