A method, apparatus and computer program product for providing two-way web service interaction crossing different enterprise domains is presented. A web service gateway provides data tunnels for directing web service requests and responses between a first endpoint, a second endpoint and the web service gateway, wherein the first endpoint is located in a different enterprise network than said second endpoint. A Service Local Registry is maintained at the gateway, the Service Local Registry exposing Web Service Description Language (WSDL) interfaces of the first endpoint and the second endpoint.