Table of Contents 1 Executive Summary Probably more than anything we've seen in IT since the invention of timesharing or the introduction of the PC, cloud computing represents a paradigm shift in the delivery architecture of information services. Google, Yahoo, Amazon, and others have built large, purpose-built architectures to support their applications and taught the rest of the world how to do massively scalable architectures to support compute, storage, and application services. Cloud computing is about moving services, computation and/or data for cost and business advantage off-site to an internal or external, location-transparent, centralized facility or contractor. By making data available in the cloud, it can be more easily and ubiquitously accessed, often at much lower cost, increasing its value by enabling opportunities for enhanced collaboration, integration, and analysis on a shared common platform. This report will be helpful to a company that wants to shift to a cloud computing technology. In this report I have briefly described cloud computing, add some tips to choose right cloud computing vendor. I have also shortly described some cloud computing providers. A comparison of Rackspace and Amazon has been done in this report. Google launches its new cloud compute engine; it is also discussed in this report and compared with Amazon. Hopefully this report will assist concerned company to shift itself on a right vendor's machines. 2 Introduction A ...
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