Cloud Computing is becoming so popular among organizations and individual users due to its economical and expandable nature. There is a shifting in IT architecture towards cloud computing. The major attractiveness of the technology is its convenience, availability, on-demand network access, scalability, speed etc. Outsourcing data in the cloud relieves the owners of the burden of local data storage and maintenance. Many believe that it will be a revolution in computing after PCs, laptops and smart phones. At the same time, being a technology of infant stage cloud computing faces many challenges and issues. The paper discusses the major challenges and issues of cloud computing.

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Cloud Computing Service Level Agreement (sla) Denial Of Service(dos)