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Minggu, 04 Desember 2016

Private Cloud vs Public Cloud

Private Cloud vs Public Cloud -  Generally speaking, a public cloud consists of a service or set of services that are purchased by a business or organization and delivered via the Internet by a third-party provider. These services use storage capacity and processor power that is not owned by the business itself. Instead, this capacity (in the form of servers and datacenters) can be owned either by the primary vendor (e.g. an online storage/backup company) or by a cloud infrastructure vendor.

A private cloud is essentially an extension of an enterprise's traditional datacenter that is optimized to provide storage capacity and processor power for a variety of functions. "Private” refers more to the fact that this type of platform is a non-shared resource than to any security advantage. 

The main differentiator between public and private clouds is that you aren’t responsible for any of the management of a public cloud hosting solution. Your data is stored in the provider’s data center and the provider is responsible for the management and maintenance of the data center. This type of cloud environment is appealing to many companies because it reduces lead times in testing and deploying new products. However, the drawback is that many companies feel security could be lacking with a public cloud. Even though you don’t control the security of a public cloud, all of your data remains separate from others and security breaches of public clouds are rare.

A private cloud’s dedicated hardware makes it more efficient. Just like a public cloud, it provides resources on demand, but it is deployed within an organization’s internal IT infrastructure. Many businesses that opt to use private clouds are interested in preserving the existing infrastructure they’ve invested in. Private clouds offer advanced security, dependable availability, and a high level of control. They can be customized according to a user’s specifications and are efficient because they are designed for and managed by the users they serve. Private clouds are well-suited to independent software vendors (ISVs) and larger businesses who want to increase efficiency and interactivity among their staff.

Public clouds are easy to implement, and because the cost of the hardware, applications, and bandwidth are covered by the provider, users pay only for what they use. Public clouds offer a lower upfront cost and unlimited scalability. Small businesses may prefer the public cloud because of its low cost, but before opting for the public cloud, users should look into their provider’s security policies. Companies like Netflix and Amazon also use public clouds. In addition to reducing or eliminating capital expense, many organizations prefer a public cloud solution for its available, on-demand capacity. Accessing the shared resources of a public cloud on an as-needed basis can remove ‘headroom' worries from the IT planning process, freeing an organization to choose services and solutions based on business goals rather than IT conditions.

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