Registries play a key role in service-oriented applications. Originally, they were neutral players between service providers and clients. The more Web services were used, the more companies started create their own 'local' registries: more efficient discovery processes, better control over the quality of published information, and also more sophisticated publication policies motivated the creation of private repositories. The Delivery Manager is a novel approach based on a publish and subscribe (P/S) infrastructure to federate different heterogeneous registries and make them exchange information about published services.