Private Cloud vs Public Cloud
What is the public cloud?
The public cloud refers to a service model that offers businesses access to computing resources — think servers, storage, and applications — whenever those resources are needed, using the public internet. The cloud service provider takes care of everything infrastructure-related, including owning and managing data centers, and the hardware and networking equipment that reside therein.
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Benefits of the public cloud
The beauty of public cloud services lies in their ability to offer businesses flexibility and scalability. Companies can quickly adjust computing resources to accommodate fluctuating demands, which means they don’t need costly on-premises infrastructure.
Public cloud services are a good choice when there are irregular demands, such as a yearly event that requires significant computing power… but only for a short period of time.
Public cloud providers offer various pre-configured services, such as virtual machines, databases, and storage. Companies can deploy and manage these services as needed and only pay for what they use. These services enable businesses to easily scale up or down their computing infrastructure based on their needs, making them highly adaptable.
Moreover, public cloud services are also cost-effective, as the business only pays for the resources they use.
What is the private cloud?
A private cloud is a computing environment dedicated to a single organization, unlike a public cloud, where computing resources are shared among multiple users.
Private clouds are typically deployed using virtualization technology, such as VMware or Hyper-V. Organizations generally create virtual machines in which they deploy their applications. Private clouds can also incorporate other cloud technologies, such as software-defined networking and storage, to provide a more flexible and scalable infrastructure.
Benefits of the private cloud
Private clouds offer high control, security, and customizability. Private clouds are attractive to organizations with strict security and compliance requirements, which must maintain a high level of control over their computing environment. That makes private clouds more popular than the public cloud for businesses in healthcare, finance, government, research, and data science – or those who do business with those industries.
Private cloud deployment models
There are two primary deployment models for private clouds: on-premises and hosted.
- An on-premises private cloud is built and managed entirely within an organization’s data center. The organization is responsible for purchasing and maintaining all its hardware and software. The organization has complete control over the infrastructure and can tailor it to its needs. That’s a match for large organizations with significant IT resources and expertise.
- A hosted private cloud, or a managed private cloud, is an environment built and operated by a third-party service provider. The service provider is responsible for purchasing and maintaining the hardware and software for the private cloud environment. The business rents the infrastructure and pays the service provider to manage it. Hosted private clouds are often used by small and medium-sized businesses that may not have the resources or expertise to manage cloud environments.
Hybrid cloud deployment strategies fuse aspects of both public and private clouds. A hybrid cloud is made up of two or more cloud environments (private, public, or community), each of which is still a separate entity but is connected by standardized or proprietary technologies to facilitate data and application portability (e.g., Microsoft Azure Stack). Depending on their needs, enterprises in a hybrid cloud environment can run some workloads on a private cloud and others on a public cloud. Businesses can keep the control and security of private clouds while achieving the scalability and flexibility of public clouds.