Private Cloud vs Public Cloud- What is the basic Difference?

Dec 20,2022 by Tarandeep Kaur
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Access is the main distinction between public and private cloud computing. Organizations employ shared cloud infrastructure in a public cloud, whereas they use their own infrastructure in a private cloud. Understanding each environment thoroughly, along with its benefits and drawbacks, will help enterprises decide which cloud environment to utilize.

Public cloud

Public cloud

In a public cloud model, cloud resources and services are provided by a third-party cloud service provider (CSP) and distributed online via a subscription model, such as platform-as-a-service (PaaS), infrastructure-as-a-service (IaaS), or software-as-a-service (SaaS) (SaaS). In this model, the cloud provider owns, operates, and maintains all of the hardware, software, and other supporting cloud infrastructure, which is then shared with other users. Amazon Web Services (AWS), Microsoft Azure, and Google Cloud Platform are a few examples of public clouds (GCP)

Advantages:

  • Savings: Since they don’t have to buy, run, or maintain hardware or software, enterprises using a public cloud model typically incur cheaper IT expenditures. Additionally, because the majority of cloud computing plans are based on consumption pricing, businesses only pay for the resources they really utilize.

  • Limited maintenance: All cloud environment and related asset maintenance is the responsibility of the public cloud provider.

  • Scalability: Businesses that use the public cloud can easily scale workloads up or down in accordance with their operational requirements and have access to nearly endless cloud computing resources on demand.

Reliability: In the event of a failure or other performance issue, workloads in the public cloud can be swiftly transferred from one server to another.

Disadvantages:

  • Security: The public cloud model uses a shared responsibility approach or SRM. This means that while a third-party service provider keeps an eye out for threats to the cloud infrastructure and takes appropriate action, they are not in charge of protecting the data, applications, workloads, or operating systems of individual clients. The consumer alone is responsible for that effort. Many customers might not be aware of their part in the shared responsibility model, and they might not have embraced reliable cybersecurity procedures tailored to the cloud. Companies that use the public cloud are likewise exposed to security vulnerabilities caused by other tenants because it is a shared resource.

  • Compliance: Due to the multi-tenancy issue, certain firms may find it difficult or impossible to comply with tight regulatory compliance norms in a public cloud environment.
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Private Cloud

A private cloud, also known as an on-premises private data center, is a type of cloud computing where a single entity has exclusive access to the cloud, its services, and the infrastructure that goes along with them. Even while a CSP may still host a private cloud, its resources are always reserved for just one user.

The majority of companies that need highly adaptable and secure IT environments employ private clouds. For instance, private clouds are frequently utilized by institutions like financial institutions, hospitals, and government agencies that manage sensitive data and are held to high compliance standards.

Advantages:

  • Privacy As the name suggests, a single tenant has total control over the cloud environment because the private cloud is not shared with other tenants.
  • Security: As long as the user has adopted a thorough security policy specifically tailored for the cloud, the private cloud tends to provide far greater control, privacy, and security because it is not shared with any other users.
  • Customization: In a private cloud model, businesses have total control over their cloud environment and can alter their network to suit their own business requirements or adhere to legal requirements.

  • Performance: The private cloud offers better performance for most users because it is not a shared resource.


    Disadvantages:
  • Cost: Using a private cloud almost always costs more than using a public cloud because the company must either develop and manage its own network in-house or pay a third party to do it for them.

  • IT burden: To set up, run, and maintain the cloud environment, the majority of private cloud users need significant IT resources.

    Cloud Models
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How Do Hybrid Clouds Work?

Due to the inherent benefits (and drawbacks) of private and public cloud models, many businesses are turning more and more to the hybrid cloud model, which is an IT setting that combines components of a public cloud, private cloud, and on-premises infrastructure into a single, universal architecture. Organizations may run and scale workloads in the best environment in a hybrid cloud environment, and they also have the freedom to swiftly and simply migrate workloads across various environments.

A hybrid cloud architecture, for instance, enables businesses to use the public cloud for high-volume, low-risk tasks like hosting web-based programs like email or instant messaging. While this is going on, the private cloud can be set aside for tasks that need more protection, such as handling payments or keeping personal information. By doing this, the company is able to take advantage of the public cloud’s financial benefits while simultaneously upholding a higher standard of security or compliance for some tasks.

Benefits of Hybrid Cloud 

Many enterprises can benefit from the “best of both worlds” with a hybrid cloud architecture. Benefits include

  • Flexibility: A hybrid cloud computing paradigm enables the company to execute a workload in the best environment while also allowing it to be moved dependent on pricing, capacity, or demand.

  • Cost-effectiveness: In a hybrid architecture, businesses can reduce expenses by choosing the most appropriate computing environment for each activity.

  • Elasticity: A hybrid cloud infrastructure is dynamic, which enables resources to be swiftly changed and distributed in accordance with the demands of the moment. Furthermore, the company can handle demand spikes using a public cloud service in the event of unanticipated ones.

  • Business Agility: By increasing the use of Agile and DevOps processes, a unified hybrid cloud platform helps speed up time to market.

  • Improved Security and Compliance: An integrated hybrid cloud platform enables the organization to adopt a comprehensive strategy for cybersecurity and legal compliance. Companies can create a complete plan and implement tooling uniformly throughout the entire environment because they are operating in a single IT environment. A hybrid cloud strategy also makes sure that the company correctly hosts sensitive data, such as customer or patient records, in a private cloud setting as required by laws or industry standards.

    Take Away:

    A number of variables, use cases, and constraints influence the decision between public, private, and hybrid cloud systems. Real-world enterprises typically use all three types of cloud solutions due to their unique value propositions, thus this is rarely an either/or problem.

    Even though you probably already utilize the cloud, it is worthwhile to create a deliberate cloud strategy to make the most of each cloud environment. Prioritize your workloads by first identifying their requirements and then weighing the advantages and disadvantages of each type. 

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