1. A computer-implemented method for providing a hybrid meta-directory for recording a grant of privileges, comprising: assigning a privilege identifier to each privilege stored in a privilege repository; in response to a granting of one of the privileges to a target user, storing the privilege identifier assigned to the granted privilege in an authoritative source domain record for the target user; and in response to receiving a query of the authoritative source domain based on a user ID, retrieving a list of privileges granted to the corresponding target user based on the privilege identifiers associated with the user ID.