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what is the difference between a private, public and hybrid cloud?

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what is the difference between a private, public and hybrid cloud?
posted Feb 16, 2014 by Rajesh Kharya

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Public Cloud
Public-cloud solutions are managed by service providers who deliver them to customers via a secure Internet connection. Many public-cloud services are multitenant, meaning the provider runs the solution in a shared environment, partitioning each customer’s data to ensure security. Others are single tenant, which means that customers have their own dedicated instance of the solution. Some experts don’t consider single-tenant services to be part of the cloud at all and instead refer to them as simply “hosted.”

Private Cloud
Enterprises can build private clouds within their own data centers by running applications on virtual servers that may reside on any number of available physical machines. This allows them to quickly add or reduce the physical capacity allocated to any given application based on demand and performance requirements. Some experts consider an environment to be a true private cloud only if this dynamic allocation of physical capacity is done automatically.

Hybrid Cloud
With hybrid clouds, organizations mix and match public- and private-cloud resources based on technical and business requirements. For example, an organization may run an application primarily in its private cloud, but tap into public-cloud resources during periods of peak demand. Or it may run an application primarily in a public- cloud environment while keeping some data relating to that application in its private cloud for compliance reasons.


answer Feb 16, 2014 by Meenal Mishra
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