Zend_Service is an abstract class which serves as a
        foundation for web service implementations, such as SOAP or REST.
    
        If you need support for generic, XML-based REST services, you may want
        to look at Zend_Rest_Client.
    
        In addition to being able to extend the Zend_Service and
        use Zend_Rest_Client for REST-based web services, Zend also
        provides support for popular web services. See the following sections
        for specific information on each supported web service.
    
Additional services are coming in the future.