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Infrastructure-as-a-Service (IaaS) is one of the types of cloud service models, the computing infrastructure that manages the overall cloud services over the internet. On-demand quickly scales up and down infrastructure services [21], working on the mechanism like a pay-as-you-go platform where cloud users pay only for what they use. This avoids the expense of buying additional physical IT-infrastructure and managed complex server and other data center resources. In a cloud environment, IaaS offers resources as an individual service component, cloud service provider [22] manages the IT-resources in a virtualized environment, and the users can focus only on installation, configuration, and software maintenance. The cloud service providers enable users to elastically utilize virtual server and storage resources by a pay-per-use method, forming networks that tie them all together [23]. By renting IaaS from a cloud service provider, essentially, cloud users not only have on-demand hardware services but also provisioning software services that automate it.