As an alternative to the three tiered classification of cloud based services – Infrastructure as a Service (IaaS), Platform as a Service (PaaS) and Software as a Service (SaaS) – cloud computing can also be classified based upon how the underlying networks are implemented and accessed by the client. The following article provides and overview of the two principle models Public and Private Clouds.
These models do not describe strict architectures and so a variety of configurations can be employed to achieve each model of cloud computing. Furthermore, each model can be used to offer each tier of cloud service as mentioned above.
Public Cloud
When most people think of cloud computing they think of a typical public cloud model where the services on offer are available to public customers through a public network, usually the internet. The accessibility of this model allows for cloud services to be supplied to …

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The use of the cloud has been heralded as the future of computing and technology, but many claim that it is not the future as it is already here. More and more businesses and individuals are choosing to use the cloud for their hosting and computing needs. Utilising the cloud can bring benefits in terms of security, reliability and scalability and in terms of hosting can provide your website with extremely high levels of up-time. For those thinking about making the move into the cloud there are different types of cloud that they will need to consider. These are public clouds, private clouds and hybrid clouds. If you are thinking about moving your business into the cloud you will need to decide which type of cloud will be most suitable. These different types of cloud hosting will provide different services; these include IaaS (Infrastructure as a Service), SaaS (Software as …

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