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Many believe that Cloud will reshape the entire ICT industry as a revolution. In this paper, we aim to pinpoint the challenges and issues of Cloud computing. We first discuss two related computing paradigms - Service-Oriented Computing and Grid computing, and their relationships with Cloud computing. We then identify several challenges from the Cloud computing adoption perspective. Last, we will highlight...
Grid is concerned with the sharing and coordinated use of diverse resources in distributed "virtual organizations.?? The dynamic and multi-institutional nature of these environments introduces challenging security issues that demand new technical approaches. In particular, one must deal with diverse local mechanisms, support dynamic creation of services, and enable dynamic creation of trust domains...
Acknowledged as important factors for business environments operating as virtual organizations (VOs), trust and reputation are receiving attention also in Grids devoted to scientific applications where problems of finding suitable models and architectures for flexible security management of heterogeneous resources arise. Being these resources highly heterogeneous (from individual users to whole organizations...
Under the circumstance of the complex, changeful and unpredictable network environment, in this article, a method which combines agent technology with grid technology, to deal with information security problem is clarified. Consequently, it provides the inner structure of information security coordination agent, and suggests an agent implementing mode and coordination processes of service grid. At...
While grid computing promises unparalleled secure sharing of computation and resources in a heterogeneous environment, it has not yet found wide-spread adoption. Without a large user base, the promises of grid computing can not be fulfilled. One reason grid computing has lacked wide adoption because users are unwilling to suffer the cost of learning new paradigms or to modify applications to use grid...
The term ldquoGridrdquo refers to systems and applications that integrate and manage resources distributed across multiple control domains. The need to support the integration and interoperation of services which governed by the policies and rules of the real organizations introduces challenging security issues. This paper presents an approach which based on web services security specifications to...
On-demand provisioning can allow collaborative communities to rapidly deploy the services required to support collaboration, without the need to acquire and operate dedicated hardware. To meet community needs for on- demand access while also maximizing global availability and runtime efficiency, the authors propose service-, container-, node-, and VO-level provisioning approaches based on a highly...
The UNICORE grid system provides a seamless, secure and intuitive access to distributed grid resources. In recent years, UNICORE 5 is used as a well-tested grid middleware system in production grids (e.g. DEISA, D-Grid) and at many supercomputer centers world-wide. Beyond this production usage, UNICORE serves as a solid basis in many European and International research projects and business scenarios...
The next generation Internet will be highly diversified in both underlying networking technologies and supported networking applications. The diversified Internet architecture requires effective collaboration among heterogeneous network domains to support various application requirements. One of the challenges to achieve this objective lies in enabling network domain collaboration and network-application...
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