The Windows Azure AppFabric Service Bus supports two bindings that have no parallel in traditional Windows Communication Foundation (WCF):
NetEventRelayBinding. These explicitly support only one-way communication from a client to a service. In the
NetOneWayRelayBinding, the service connects to the Service Bus which creates a listening endpoint for the service. A client can connect to this relay service endpoint and send messages to it that are relayed to the service. The
NetEventRelayBinding is derived from the
NetOneWayRelayBinding and adds the feature that multiple services can listen at the same relay service endpoint. This makes the
NetEventRelayBinding useful for publish/subscribe scenarios, ...