Cloud Computing is an emerging hot business support technology for the future; and as analyst firm Gartner puts it, it is one among the top-10 strategic technologies for the year 2010. Advantages like low-cost business systems, easy installation, low productivity lead-time and quick roll-out of services talk in favor of this futuristic business model. It addresses the evolving needs of communication service providers like on-demand and web-enabled systems that are service-provider oriented, technology solutions to adopt new business models that are economical, and single-point responsibility for supporting business systems and effective risk management. These advantages attract the attention of communication service providers (CSPs) to cloud computing and keep it in their focus, while they think about strategic technology solutions. These high expectations ultimately increase the responsibility of cloud service providers to meet the needs of the CSPs, even to a minute level.