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Abstract
Cloud computing is getting well known among IT businesses because of its deft, adaptable and savvy services being offered at Software, Platform and Infrastructure level. Software as a Service (SaaS) enables clients to get to applications facilitated by various merchants on Cloud by means of web. Platform as a Service (PaaS) empowers engineers to code, test and send their applications on IaaS. In Infrastructure as a Service (IaaS) model, Cloud suppliers offer services, for example, computing, system, stockpiling and databases by means of web. IaaS is the base of all Cloud services with PaaS and SaaS both based upon it. The essential highlights of IaaS are elasticity and virtualization. Virtualization empowers a solitary system to simultaneously run various disengaged virtual machines (VMs), operating systems or different cases of a solitary operating system (OS). Notwithstanding, there are as yet open difficulties in accomplishing security for Cloud virtualization. Research has been done to explore major security issues related to virtualization in Cloud. The standard bodies in computing security including National Institute of Standard Technologies (NIST), Cloud Security Alliance (CSA), and Payment Card Industry Data Security Standard (PCI DSS) have issued guidelines on virtualization technologies.