International Journal of Computer Applications
Cloud computing is an attractive utility-computing paradigm based on Service Level Agreements (SLAs) that is experiencing rapid uptake in the commercial sector. Cloud systems offer low cost public access to vast proprietary compute, storage and network resources. These systems provide per-user and per-application isolation and customization via a service interface that is typically implemented using high-level language technologies, well-defined APIs and web services. Web interactions usually require the exchange of personal and confidential information for a variety of purposes, including enabling business transactions and the provisioning of services.