*SOAP*: Simple Object Access Protocol The RESTful way XML-RPC: remote calls made easy SOAP: flexible, extendable, and not so "simple" WSDL, WS-SIG and other SOAP buddies References PEAR::SOAP http://pear.php.net/SOAP The RESTful way XML-RPC: remote calls made easy SOAP: flexible, extendable, and not so "simple" WSDL, WS-SIG and other SOAP buddies References *SOAP*: Simple Object Access Protocol The RESTful way XML-RPC: remote calls made easy SOAP: flexible, extendable, and not so "simple" WSDL, WS-SIG and other SOAP buddies References