The Web service endpoint is the port upon which you connect a Web service client to the Orchestrator server.
You connect to the Orchestrator Web service's endpoint at the following URL, in which orchestrator_server is the IP address or host name of the host on which the Orchestrator server is running.
http://orchestrator_server:8280/vmware-vmo-webcontrol/webservice
The Web service runs over HTTP or HTTPS on port 8280 or 8281 of the Orchestrator server. Access to the Web service API requires a valid username and password on the Orchestrator server. Because every access to the service is authenticated separately, a secure HTTPS connection is not strictly necessary. However, the Web service sends passwords over the network without encryption, so use a secure HTTPS connection if security is an issue for your applications.