Salvatore Venticinque

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The cloud paradigm appeared on the computing scene in 2005 with the Amazon Elastic Compute Cloud (EC2) . After this date, a large set of related technologies has been developed. In the academic world, and especially in the HPC area, cloud computing is in some way in competition with the GRID model, which offers a middleware based approach. One of the(More)
Cloud computing is a technology of enormous scope for innovation especially in a volatile market and rapidly evolving, in which, the ability to exploit new technologies and remaining competitive is more important. However the choice of Cloud providers, whose offers best fit the requirements of a particular application, is a complex issue due to the variety(More)
The breakthrough of Cloud comes from its service oriented perspective where everything, including the infrastructure, is provided “as a service”. This model is really attractive and convenient for both providers and consumers, as a consequence the Cloud paradigm is quickly growing and widely spreading, also in non commercial contexts. In such a scenario, we(More)
Cloud computing represents an opportunity for IT users to reduce costs and increase efficiency providing an alternative way of using IT services. In this scenario value added services for dynamic and elastic provisioning play an important role, by giving the possibility to get the best resources configuration that satisfies the application requirements.(More)
The selection of Cloud providers, whose offers best fit the requirements of a particular application, is a complex issue due to the heterogeneity of the Cloud services, resources, technology and service levels offered by the several providers. In this paper, we illustrate a model for the resolution of a problem of choice between alternatives, when numerous(More)