In the previous installment of this article, the two fundamental models of cloud computing, private and public clouds, were described. The following installment introduces two further variations on these models which can be used to add flexibility to an organisation’s IT infrastructure, the hybrid and the community cloud models.
Community Cloud
A community cloud model describes a scenario in which a number of organisations with similar IT demands club together to use the same cloud infrastructure. They are particularly appropriate where the organisations perform similar functions and therefore require the same configurations, especially in relation to security and compliance. In essence it is a half-way house between the private and public cloud models.
The model is similar to that of a private cloud in that it is a ring fenced platform which ensures greater levels of security than the public cloud offers and it can also be hosted internally by …

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Cloud computing services compose of cloud computing models that offer services directed to specific group of people involved. These can be classified into four major categories:

Private
Public
Community
Hybrid

Let us now understand about each one of these services one by one.
Private: A private cloud computing service is designed to serve individual organizations. This service may be managed internally by the cloud computing service provider or by some other party existing outside and hosted externally. Private cloud is also known as corporate cloud as it comprise an architecture rendering services to a specific number of people behind a firewall. With advances in technology that is prevalent in distributed computing and virtualization it is possible for the service providers to cater to the individual needs of the clients within the corporate world.
Public:
A public cloud computing is all about a service that offers standard cloud computing to the …

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