In a next generation network (NGN) service environment, telecommunication service will continue to change from technology-oriented service to service-oriented service and customers will demand value-added Differentiated Services. To succeed in this business environment, service providers must support the evolution of next generation services and change their existing operational support system (OSS) into a highly distributed, loosely coupled and open-standard based OSS architecture. Also, OSS must shift to include business-oriented aspects. For the NGN telecommunication management, the Telemanagement (TM) Forum has developed a Next Generation Operational Systems and Software (NGOSS) architecture. One of the cornerstones of the NGOSS is the e-TOM business process model. In the service delivery management point of view, in the past, service delivery steps mostly depended on manual jobs and were based on single domain and single technology based-service delivery architecture. This has been a bottleneck, and has prevented flow-through and integrated service delivery in NGN service environment from being realized. An NGOSS-based automatic service delivery system using enterprise application integration (EAI) technology, including business process automation service using workflow, messaging service using a common messaging bus and XML messages, and connectivity service using transport protocol adaptor framework, will allow OSS developers and service providers to quickly automate business processes across the enterprise which are extendable to allow for new services quickly and easily.