Abstract: The emergence of cloud computing has significantly changed the industrys perception of infrastructure, service delivery and development models. The business use of cloud based services is expanding and as a result there is a requirement for analysis and research on secured use of cloud computing. The enhanced requirement of enterprises lead to the evolution of combinatorial approach of cloud model called Hybrid Cloud which is mix up of public and private cloud. This transition towards hybrid architecture has stimulated the concerns on a critical issues and challenges associated with effective implementation of security model. As a result the main objective of this study is of two sets; firstly to analyze the trend, service models, deployment models in cloud computing and focus shift towards hybrid cloud and secondly to analyze the security issues associated with hybrid cloud coupled with IaaS and possible solutions to mitigate. This review article also discusses the introduction of Virtual Private Network (VPN) tunnel and data encryption approach as solution to mitigate the security issues associated with Hybrid Cloud Model. The VPN approach and data encryption operating in IaaS service model ensures the authentication, integrity and confidentiality of involved data and communications between the cloud and enterprises.
D. Praveena and P. Rangarajan, 2014. Analysis of Trend, Service and Deployment Models in Cloud Computing with Focus on Hybrid Cloud and its Implementation. Research Journal of Applied Sciences, 9: 181-186.