Friday, 14 September 2012

Cloud Computing-Essay

So you have been assigned on an essay on cloud computing and do not have an idea on how to go about it? Well, why don’t you consider starting with the definition of cloud computing? Cloud computing is a computing model where IT resources that are priced and provided, are made available for customers to plug in to the cloud of IT resources.
The name cloud computing originated from derive of using drawings of stylized clouds to indicate the networks in the diagrams.
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 It consists of four models namely, public, community, private and hybrid. For the public computing, it consists of different types such as platform as a service, software as a service, and data as a service just to mention a few. Platform as a service model, provides computing platform typically including operating system, programming. On the other side, software as a service, the cloud providers install and operate application software in the cloud and cloud users access the software from cloud clients. Cloud computing also enhances the sharing of multitenancy enables resources and costs to be shared across a large pool of users. It consequently allows the centralization of infrastructure in locations with lower costs. It also supports peak-load capacity and utilization and efficiency of resources
Cloud computing is characterized by some of the following aspects. To begin with cloud computing is cost effective. It also enhances virtualization hence making it easy for applications to migrate from one physical server to another. Again cloud computing is reliable in cases where multiple redundant sites are used in basis if that it makes well-designed cloud computing suitable for business continuity and disaster recovery. Cloud computing is also characterized by easy maintenance of applications. This is consequent to the fact that computers can be accessed from different places. 

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