The Executor Bus Binding is a special bus binding that allows applications to provide send work (via a message) to be processed on a separate thread. The executor binding can be used to perform processor intensive work in a thread other than an application's main dispatch thread, or can be used as a means to implement outbound gateways in which the executing thread 'pushes' the sent message to an external system. Work done by the processor of an executor bus is acknowledged and therefore Guaranteed across failures.