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Private Cloud  Definition:
               The cloud service is operated solely for an
               organization. It may be managed by the organization or
               a third party and may exist on premise or off premise. It
               is a subset of the enterprise IT and managed services
               markets.

               Uses:
               Secure enterprise applications , secure databases and
               sensitive customer financial data and applications, e.g.
               SAP
               Examples:
               Savvis Symphony – 1st SP to offer private cloud
               services

                                   Pros:
                                   Yields same benefits as public clouds
                                   Services available on demand
                                   Can act as a gateway to the public
                                   cloud
                                   Keeps business-critical information
                                   systems inside

                                   Cons:
                                   Doesn’t have the elasticity of public
                                   clouds
                                   Limited scale and flexibility
                                   Requires significant investment
                                   Obsolescence risk is still a worry
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