Fekade, Getahun (PhD)Aschalew, Gashaw2018-12-212023-11-042018-12-212023-11-042018-11http://etd.aau.edu.et/handle/123456789/15225Cloud computing is one of the most discussed topics in recent years among distributed systems. Many Information System (IS) professionals now consider cloud technology as the best solution to improve the growth of business in every sector. Today, there are a plethora of cloud service architectures that are generated by prior studies. However, there is no de facto architecture that can satisfy context-based client requirements. The provider dependent architectures are designed in a way to suit the services and products of the respective cloud providers. While others are targeted for specific cloud service model and cloud deployment model. These days, many organizations show interest to adopt cloud environment that is apt to their local settings. To this end, organizations require cloud service architecture tailored to their current context. On the other hand, carriers which adopt new technologies mostly with the recommendation of providers are challenged to satisfy client requirements. The study proposed a conceptual carrier-based cloud service architecture taking into consideration client’s requirements and the capability of the carrier. The architecture was designed with three major components, namely Infrastructure as a Service (IaaS), Cloud Service Broker (CSB) and telecom capability services. The architecture has also incorporated the Service Oriented Architecture (SOA) based Enterprise Service Bus (ESB) architecture for dynamically configurable virtualised services. A deployment environment is also constructed for the proposed architecture using the analysis result of the collected data from clients and carrier cloud provider. Industry best practice and standards have also been considered while generating the deployment environment. Finally, an evaluation of the proposed architecture has been conducted using experts review and it achieves a high degree of agreement among the participants.en-USCloud computingCloud serviceCloud service architectureContexThesis