ISO/IEC 19500-1:2012规定了CORBA对象模型，并使用该模型中的概念来定义对象请求代理（ORB）的操作。ORB是一种基本机制，通过它，对象可以在同一台机器上或通过网络透明地向彼此发出请求并从中接收响应。客户端不需要知道用于与对象通信或激活对象的机制、对象的实现方式或对象的位置。

ISO/IEC 19500-1:2012 specifies the CORBA Object Model and uses concepts from that model to define the operation of the Object Request Broker (ORB). The ORB is the basic mechanism by which objects transparently make requests to, and receive responses from, each other on the same machine or across a network. A client need not be aware of the mechanisms used to communicate with or activate an object, how the object is implemented, or where the object is located.