1. A method, comprising: providing a catalog indicating a plurality of resource managers and at least one service offered by the resource managers; providing resource manager information indicating resource availability information for resource managers offering at least one service; receiving a request for a requested service from a subscriber; processing the catalog to identify resource managers publishing the requested service; and processing the resource manager information to determine at least one identified resource manager publishing the requested service that also satisfies at least one rule applicable to the service request.