What is a private, hybrid, private cloud? How to deploy?

Cloud technologies are used widely for their efficiency, performance, reliability, and scalability. By moving to a cloud platform, businesses can solve issues with resource capacity, legal compliance, and employee mobility. There are three types of cloud solutions: private, public, and hybrid. Private clouds are virtual infrastructure that are dedicated to a single organization and not shared with other users. Public clouds are owned and operated by third-party companies and are shared among multiple users. Hybrid clouds combine elements of both private and public clouds, allowing organizations to use the most appropriate resources for their specific needs. The type of cloud solution that is best for a company depends on its specific requirements.

Which virtual IT infrastructure to use depends on the needs of your company. And we will tell you how different types of clouds differ from each other and how to deploy them.

Public cloud

Public clouds are cloud computing services that are offered by third-party companies and made available to the public over the internet. These clouds are operated and maintained by the service provider, and users can access the resources and services provided by the cloud through the internet. Public clouds offer a range of services, including infrastructure as a service (IaaS), platform as a service (PaaS), and software as a service (SaaS). Users pay for the resources and services they use on a pay-as-you-go basis, and there is often no upfront cost for using the cloud. Public clouds are a good option for companies that do not want to invest in their own infrastructure and want to scale their resources as needed.

Private (private) cloud

Hybrid cloud is a combination of private and public clouds, connected by a common network. The company can use the public cloud to provide additional resources to its private cloud. The company can also use the public cloud to host non-critical workloads, while keeping critical workloads on the private cloud for added security and control. The hybrid cloud allows a company to take advantage of the scalability and cost-effectiveness of the public cloud, while still maintaining control over sensitive data and applications.

Solution advantages:

  • high level of security; 
  • complete isolation of the infrastructure; 
  • equipment control;
  • corporate-level hardware lease (HP blade servers, NetApp storage systems); 
  • the ability to quickly expand resources; 
  • support of qualified personnel in 24×7 mode; 
  • the possibility of placement at the customer’s site.

Hybrid cloud

This model involves the consumption of IT resources in which part of the resources are hosted in the provider’s cloud and the other part is located on servers that are owned or leased by the user. The hybrid model allows the provider’s on-premises and off-premises clouds to be combined into a single space.

The idea is that when there is not enough capacity, external resources can be used. For example, if on-premises storage systems transfer a large amount of data to a public cloud for processing, it is considered a hybrid cloud. This model is often used to increase capacity during peak loads or to shift from capital costs to operating costs.

In summary, all three models are cloud-based and do not require physical equipment to be tied to a specific location. Instead, all allocated computing power is available via the Internet from any device. However, in a private cloud, the user has exclusive access to the equipment, while in a public cloud, the user has access to virtual resources. Private clouds can be thought of as apartments, public clouds as houses, and hybrid clouds as townhouses.

Some companies that use data center services and prioritize the security of their data may order server racks that are enclosed in a perimeter structure, known as a “cage”. This option may be necessary due to corporate policy, but even without a “cage”, modern TIER III data center equipment is secure and under constant surveillance, including video recording.

What to choose and what business benefits different types of clouds provide

It may seem that all three types differ only from the point of view of architecture, while the rest of the parameters are almost the same. However, it is not. There are a number of parameters to consider when choosing.

  • Elasticity and scalability . In terms of the ability to quickly allocate the capacity you need, the public cloud outperforms the private one. In public, you can have an almost unlimited amount of resources. Privately owned offers the power available to your own or rented equipment. It turns out that if the scalability of resources is important to you, you need to choose a public cloud. Not needed – choose private.
  • Availability and continuity of services. If we take the criterion of constant availability of services, when even failures pass without data loss and with minimal damage to the user, then the private cloud is again inferior to the public one. In private, you need to set up backups yourself, organize the distribution of data across 2-3 data centers. It is difficult and expensive. Cloud providers already have all the software and hardware solutions to protect data and maintain the stability of the client’s services. Moreover, this is included in the cost of services. There are also additional features: balancers, disaster recovery services . They are easily connected via the control panel. If data loss or unavailability of services is critical for you, but you don’t want to overpay, choose a public cloud.
  • Relevance of software and hardware. Public cloud providers offer customers not only modern hardware, but also software. Up-to-date software, new technologies that improve the usability of the infrastructure or increase its performance – this is monitored by the cloud provider. Or you, if your cloud is private.
  • The speed of work . A private cloud is faster because all of its power is at your disposal and all resources are on your network. Although a lot here depends on the bandwidth of the Internet channel.

It’s important to note that public clouds have some drawbacks as well. They require a stable and fast Internet connection to access cloud resources at any time of day. Virtualization can also slightly affect resource configuration. Additionally, users must pay monthly for the resources they consume, although the pay-as-you-go system has made these costs more manageable.

Hybrid solutions offer the benefits of both models by distributing data across different cloud environments and reducing virtual infrastructure costs. However, there is a risk of sacrificing security if the integration is not done properly.

How to Deploy Private, Public, and Hybrid Cloud

Clouds are wonderful. But how much will they cost the company? The answer to this question depends on how you deploy your infrastructure.

Private can be deployed in two ways.

  1. Build at our own facilities, then service it independently or with the involvement of external specialists.
  2. This model involves renting part of a data center and its equipment from a provider and deploying it on rented devices. It requires hardware provisioning and cloud platform costs. Users can choose open source solutions, but this requires experts who are familiar with the platform and able to customize it to meet their needs.

Public clouds are easier to set up, requiring only the selection of the desired service in the administration panel, after which applications and data can be transferred to it. This task can be handled by the company’s IT department or the provider’s specialists.

The cost of hybrid solutions is determined by the cost of the private infrastructure and resources leased from the public cloud.