A Review on Cloud Computing: Design Challenges in Architecture and Security
Journal of Computing and Information Technology - CIT 19, 2011, 1, 25–55 25 doi:10.2498/cit.1001864 A Review on Cloud Computing: Design Challenges in Architecture and Security Fei Hu1, Meikang Qiu2,JiayinLi2, Travis Grant1, Draw Tylor1, Seth McCaleb1, Lee Butler1 and Richard Hamner 1 1 Department of Electrical and Computer Engineering, University of Alabama, Tuscaloosa, AL, USA 2 Department of Electrical and Computer Engineering, University of Kentucky, Lexington, KY, USA Cloud computing is becoming a powerful network archi- Rather than hard-wire data circuits between the tecture to perform large-scale and complex computing. provider and customers, telephone companies In this paper, we will comprehensively survey the concepts and architecture of cloud computing, as well began using VPN-based services to transmit as its security and privacy issues. We will compare data. This allowed providers to offer the same different cloud models, trust/reputation models and amount of bandwidth at a lower cost by rerout- privacy-preservation schemes. Their pros and cons ing network traffic in real-time to accommo- are discussed for each cloud computing security and architecture strategy. date ever-changing network utilization. Thus, it was not possible to accurately predict which Keywords: cloud computing, security, privacy, computer path data would take between the provider and networks, models customer. As a result, the service provider’s network responsibilities were represented by a cloud symbol to symbolize the black box of sorts from the end-users’ perspective. It is in 1. Introduction this sense that the term “cloud” in the phrase cloud computing metaphorically refers to the Cloud computing is quickly becoming one of Internet and its underlying infrastructure.
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