The technology of cloud computing has seen an increase in popularity among individuals and business over the past few years. Cloud computing has three service models layered based on computing infrastructure. The three service models of the cloud computing infrastructure are: Software as a Service (SaaS), Platform as a Service (Paas), and Infrastructure as a Service (Iaas). Each of the three models allows users to use cloud computing in a way that is specific to the individual user. Individuals who use the SaaS model are able to access the application through a client interface such as a web browser. The providers of the SaaS model would be the ones who are responsible for maintaining the cloud from its physical servers to the operating systems. The common products of the SaaS system are Google Apps and Salesforce Sales CRM. On the other hand, the PaaS service model permits businesses and individuals to use their own applications, such as programming language and tools, on the provider’s cloud infrastructure. Within this service model, the service providers are responsible for managing everything except the application. The common products provided through the PaaS model are ...
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