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Cloud computing helps fulfill the dream of unending hardware and computational resources which are accessible upon request [6]. Consequently, from the user’s perspective, computational and physical resources can be maintained whenever the amount of resources are required. A cloud framework should be able to provide sufficient computational resources in a flexible manner, expanding along with the number of clients or application stacks, and can discharge the resources when its job is over.

Scalability additionally characterizes an application that is fit for scaling itself when many customers and applications are included and furthermore when the design of utilization or application necessitates changes. It ought to be equipped for discharging the resources when the clients or applications are through with the service. Scalability allows the cloud framework to scale-up and downsize as per the prerequisites of the applications.