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Cloud computing is a ubiquitous computing model that can provide convenient on-demand network access to a shared pool of configurable computing resources such as networks, servers, storage, databases, applications, services that can be rapidly provisioned and released with minimal management effort or along with service provider interaction. Cloud computing made fundamental changes the way IT services are delivered and consumed. The three service models associated with cloud computing are Software as a Service (SaaS), Platform as a service (PaaS) and Infrastructure as a. Service (Iaa) and Services (Software) As a Service, the consumer uses the provider’s SaaS platform to access the applications running on a cloud platform.