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Difference Between Public, Private, and Hybrid Cloud: Cloud Models Explained


In the past, if a company needed to deploy an application, its employees had to install server hardware on its premises. This is quite an expensive and time-consuming procedure, especially if you work with high-load services. In addition, it’s impossible to do without an experienced network administrator, who would configure the equipment and monitor its proper operation.

The emergence of cloud technology has greatly simplified this task due to its flexibility, scalability, ease of deployment, and low cost.  In this article, we will compare the pros and cons of public, private, and hybrid cloud servers.

Private cloud

The private cloud is a type of cloud infrastructure that is intended solely for use within an organization. It offers a higher level of security and customization than the public one.

Private clouds are typically created and managed by a company's IT department or a third-party provider. It can be run using a combination of both on-premises and external resources or hosted entirely in a third-party data center.

The key advantage of private clouds is that they give businesses more control over computing resources, allowing them to customize their infrastructure to meet specific needs and requirements.

Private clouds also provide a higher level of security because the resources are only used internally and cannot be accessed by other companies. This reduces the risk of unauthorized access to sensitive data.

When it comes to pricing, maintaining a private cloud can be more expensive than using a public one, because, in this case, you pay for a dedicated infrastructure tailored to the company's needs.

Public cloud

The public cloud is computing and storage capacity made available to multiple organizations and individuals at once. Cloud providers manage the service and are responsible for resource availability, security, and performance. A public cloud is an inexpensive and affordable solution because you only pay for the resources you use, and the provider ensures that they are secure and functioning properly.

One of the major advantages of public clouds is their scalability. Companies can quickly and easily access additional computing and storage capacity without investing in expensive hardware and software. This allows you to respond quickly and flexibly to changing business requirements.

Another important advantage of public clouds is their cost-effectiveness. You pay only for the resources you actually use, so you can avoid the costs associated with managing and maintaining your own infrastructure.

However, the public cloud also has its drawbacks. For example, data security is less assured than in the case of the private cloud. Data from different customers is often stored on the same server, which can pose a threat to information security. This is especially critical in some industries, such as finance or medicine.

Hybrid model

A hybrid approach combines the features of both public and private clouds. It allows companies to take advantage of public cloud benefits such as scalability and cost-effectiveness while maintaining the level of control and security inherent in private clouds.

One of the key benefits of hybrid clouds is the ability to balance security and cost.

Organizations are able to be more flexible in the distribution of workloads and decide which tasks will be run in either of the clouds.

For example, critical workflows can be run in private clouds to ensure greater security and privacy, while less critical workloads can be run in public ones, saving costs and scaling easily.

Companies can also use the tools and services offered by cloud providers to manage their hybrid cloud infrastructure, ensuring that all workloads run smoothly and securely.

Comparison of the models

Private cloud Public cloud Hybrid cloud
Cost High Low Intermediate
Security Higher level of protection Depends on a provider Depends on a configuration
Customization capabilities Extensive Limited Depends on a configuration
Scalability Limited High High
Data storage Within a corporate network On a provider's servers Within a corporate network and on a provider's servers
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In conclusion

Private, public and hybrid clouds offer their own unique benefits when it comes to cost, security, customization options, scalability, and reliability. When choosing between these cloud infrastructures, it is important to carefully weigh the specific requirements and needs of the company.

Private clouds provide a high level of control, security and customization, but are more expensive. Public clouds offer cost efficiency and scalability but may have limited customization options, while security depends on a provider.

Hybrid clouds strike a balance between the benefits of private and public clouds, allowing organizations to take advantage of the best of both approaches.

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