Abstract
As an effective reuse paradigm, Cloud Computing (CC) provide many benefits. Among different types of cloud services, SaaS and Mash-up services are delivering the conventional software functionality as a service. Hence, both types of services become alternatives to acquisition of conventional software applications. However, there are some critical technical problems/risks in trying to reuse SaaS and Mash-up services, such as providing pre-specified scalability even at peak and engineering services with high commonality and applicability. In this paper, we first define meta-models of two types of cloud services; SaaS and Mash-up Service. For each type of cloud service, we raise two technical issues and provide their effective solution space. By applying the provided solutions, much of the technical problems and risks can be remedied in advance, making cloud services more reusable and reliable.
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