Service Oriented Architecture Methodology to improve reusability of e-Government Systems: case study from Sinnar state, Sudan

Abstract Reusability, interoperability and integration are important factors in e-government systems since different governmental units collaborate to deliver a holistic service to a citizen. In the other hand building scalable software systems remains a complex undertaken, since such systems supposed to focus on processes and tools which support the concept that large systems can be assembled from independent, reusable collection of functionality to facilitate integrating disconnected systems. The main objective of this study is to propose service oriented architecture (SOA) development approach that can be implemented in Sudan e-government portals to improve reusability and interoperability throughout adopting a case study approach. The study presented a methodology for building e-government applications based on service-oriented architecture to promote reusability, interoperability of these applications since governmental agencies supposed to work in integrated manner to deliver a holistic service to a citizen. Besides, the model will contribute in dealing with heterogeneity of technologies and platforms used to realize e-government systems which resulted from the individual responsibility for each governmental unit to develop its own system with its own technological and platform choices, as the methodology defined set of guidelines and standards for e-government applications and e-services evaluated through case study step by step implementation.