Business services are ALSB definitions of the enterprise services with which you want to exchange messages. You define business services using WSDLs (Web Services Definition Language) just as you would define a proxy service. However, the configuration of business services differs from that of proxy services in that a business service does not have a pipeline. Therefore, a business service is any service not implemented by the ALSB pipelines.
For more information, see Proxy Service and Business Service Configuration in AquaLogic Service Bus User Guide.