An open and implementation-independent service messaging and interfacing model, that should isolate application code from the specifics of routing services and transport protocols, and allow service implementations to be substituted.

• 一个开放且与实现无关的服务消息传递与接口模型,它应该将应用程序代码从路由服务和传输协议中分离出来,并允许替代服务的实现。