000			02144nam a22001817a 4500
008			150812b xxu||||| |||| 00| 0 spa d
020			_a9780124046276
082			_223 _a004.67/82 _bM17c
100			_aMarinescu, Dan C. _91158
245			_aCloud computing : _btheory and practice / _cDan C. Marinescu.
260			_aBoston : _bElsevier/Morgan Kaufmann, Morgan Kaufmann is an imprint of Elsevier, _c2013]
300			_axvii, 396 pages : _billustrations ; _c24 cm
500			_aIncludes bibliographical references (pages 361-378) and index.
520			_a"The first chapter gives an overview of cloud computing at a level accessible to a lay person. To motivate the reasons for a paradigm shift in the way we compute and store information, we introduce the concept of network-centric computing and network-centric content. A brief discussion of peer-to-peer systems, a first step in the shift from local to remote data storage and processing follows. The chapter continues with a discussion of technological advances that have made cloud computing possible and of the economical reasons why this new paradigm is attractive for many users and applications. Then we take a closer look at the cloud computing delivery models, Software as a Service (SaaS), Platform as a Service (PaaS), and Infrastructure as a Service (IaaS). SaaS gives the users capability to use applications supplied by the service provider but allows no control of the platform or the infrastructure. PaaS gives the capability to deploy consumer-created or acquired applications using programming languages and tools supported by the provider. IaaS allows the user to deploy and run arbitrary software, which can include operating systems and applications. The new paradigm raises ethical questions and has significant vulnerabilities each dissected in separate sections. Finally, the chapter presents the major challenges faced by this new paradigm. The chapter concludes with a overview of the literature and with a historic perspective"-- |c Provided by publisher.
650			_aCloud computing. _91081
650			_acomputación en la nube. _91109
942			_2ddc _cOB
999			_c4533 _d4533