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Cloud Computing: Business Trends and the Challenges

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Int. J. on Recent Trends in Engineering and Technology, Vol. 8, No. 1, Jan 2013

Cloud Computing: Business Trends and the Challenges
Christina Kerr, Phuong-Thao (Jackie) Vu and Sadegh Davari
School of Science and Computer Engineering
University of Houston – Clear Lake
Davari@UHCL.edu
(Platform as a Service) and SaaS (Software as a Service); and four main deployment models: public, community, private and hybrid. Each service and deployment model is described in the sub-sections that follow. Table 1 gives a summary of what each service model can provide for businesses.
1. Cloud Computing Service Models. The three types of cloud computing service models are IaaS, PaaS and SaaS.
Figure 1 depicts the hierarchal relationship between the various service models and describes the services, hardware and software provided by each [13].

Abstract — The purpose of this paper is to provide information to businesses interested in cloud computing. First we define cloud computing and discuss the different service and deployment models from a business standpoint. Then we move into business cases for the cloud and the strengths of each service and deployment model. We follow this up with business attributes that tend to drive a cloud adaption and the effects of cloud on business IT. The last section reveals the challenges of cloud computing ranging from security concerns and legal issues, to negotiation of an adequate service level agreement.
Index Terms – cloud computing, cloud computing effects on business IT, cloud computing challenges

I. INTRODUCTION TO CLOUD COMPUTING
A. Cloud Computing Defined
Cloud Computing is a style (or method) of computing for which scalable and elastic IT capabilities are provided as a service to multiple customers via the Internet [8]. Simply stated, cloud computing enables third party cloud service

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