期刊名称：UPGRADE: The European Journal for the Informatics Professional
印刷版ISSN：1684-5285
出版年度：2010
卷号：XI
期号：03
出版社：Council of European Professional Informatics Societies
摘要：Infrastructure and Platform as Service Clouds represent a major step in the evolution of hosting and the way services are published and consumed on the Internet. This paper analyzes the main aspects of the evolution of Clouds along three major development axes. The first axis has to do with the utility-like provision of ICT infrastructures. Here Clouds have still to evolve in order to achieve the desired level of abstraction as well as a convergent and flexible allocation of the computing, storage, networking and communication resources needed to comply with agreed SLAs. The second axis has to do with support from the marketplace and mashup, or hybrid, functions which will drive transformation of Clouds into true business ecosystems. The third axis addresses the gradual incorporation of built-in programming libraries that will ease development of applications deployed on the Cloud. This paper will also elaborate on existing technologies and the role standards and open source may play in evolution along each of these three axes. Last but not least, opportunities for telco operators in the Cloud Market will be analysed as they could have an advantageous position to offer integrated ICT solutions
