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With its promise to deliver better business models and services quickly and cheaply, cloud computing could be the next major driver of business innovation across all industries. In a recent analyst survey, more than 2,000 CIOs identified cloud computing and virtualization as the top-two technology priorities for 2011. This white paper provides summary concepts within the paradigm of cloud computing and "as-a-service" delivery models, focusing on different options and what SAS offers. Because virtualization enables the creation of flexible clouds with elastic computing resources, this paper presents a high-level overview of that technology. Other elements needed for successful cloud computing, such as security, data management, scalability and policy-based compliancy, are also addressed. Finally, the paper provides customer case studies that illustrate how the power of SAS® Analytics can be delivered using a variety of cloud environments and the benefits that have been achieved.