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.