How to Choose Between Public and Private Cloud

Choosing between a public and private cloud is critical to ensuring your business always has the correct amount of resources, security, and support. From the pay-as-you-go, shared environment of the public cloud, to the more customizable, dedicated infrastructure of a private cloud, you have extensive options available to meet your hosting needs.

At OVHcloud, we believe companies should have access to a wide range of server options that fit their organization's needs. Whether you are an emerging AI brand, an enterprise-level company, or a small business, our public and private cloud offerings can help you maximize your company’s potential.

What Is a Public Cloud?

Public clouds are cloud environments created and managed by third-party cloud service providers, which offer compute resources (like servers and storage) over the Internet. These resources are shared among multiple organizations and users, hence the term “public.”

How Public Clouds Are Used

Public clouds are used for a variety of reasons and by a variety of companies. Software as a service (SaaS) public cloud hosts applications in the cloud; platform as a service (PaaS) allows application development and management via the cloud; infrastructure as a service (IaaS) provides compute resources via the cloud.

Software as a Service (SaaS): Applications hosted in the cloud and made available to users over the Internet. Examples: Google Workspace, Microsoft Office 365, and Salesforce.

Platform as a Service (PaaS): Platforms that allow developers to build, deploy, and manage applications in the cloud without worrying about the infrastructure. Examples: Google App Engine, Heroku, and Microsoft Azure App Service.

Infrastructure as a Service (IaaS): Offers virtualized computing resources over the Internet, allowing organizations to rent IT infrastructure without buying. Examples: Amazon EC2, Google Compute Engine, and Microsoft Azure Virtual Machines.

How Public Clouds Operate

Public cloud providers own and manage the infrastructure, ensuring maintenance, updates, security, and scalability. Resources in public clouds are virtualized, utilizing technologies like VMware or Hyper-V. This virtualization allows multiple users to share the same physical server but still have isolated environments.

Who Public Clouds Are For

Public clouds are for businesses or individuals that:

• Need to rapidly scale resources.
• Don't want to manage and maintain the underlying infrastructure.
• Have fluctuating demands.
• Want to only pay for the resources they use.
• Can tolerate the potential for lower levels of data privacy or have strategies to manage these risks.

Pros of Public Cloud

Scalability: Easily scalable with vast amounts of available resources.

Pay-as-you-go: Only pay for the services and resources you use, often leading to cost savings.

No Maintenance: The service provider manages all maintenance, upgrades, and patching.

Flexibility: A wide variety of services and applications are readily available.

Reliability: Large infrastructure means redundant resources, which can lead to increased reliability and uptime.

Cons of Public Cloud

Security Concerns: Shared resources might not be ideal for sensitive data. While major providers invest heavily in security, there's always a potential risk due to multi-tenancy.

Potential for Increased Costs: As your business grows, so might your costs if not managed properly.

Potential Performance Issues: No direct control over infrastructure could lead to occasional latency issues.

Compliance and Governance: Not all public clouds might comply with specific industry regulations or standards.

What Is a Private Cloud?

Private clouds are cloud environments used exclusively by one business or organization. They can be physically located at an organization’s on-site data center, or they can be hosted by a third-party service provider. However, in a private cloud, services and infrastructure are maintained on a private network.

How Private Clouds are Used

Dedicated Infrastructure: Organizations can ensure that specific hardware is dedicated to their tasks, offering more control.

Hosted Services: Even within a private cloud, organizations can use it to host applications, databases, and other services.

Secure Data Handling: For highly sensitive tasks, like handling personally identifiable information or proprietary data.

How Private Clouds Operate

The organization either manages the infrastructure internally or delegates it to a third-party provider. Infrastructure is typically virtualized, and there's a higher degree of control over how resources are distributed. There's often a greater emphasis on internal security protocols, and the business can customize its environment to its specific needs.

Who Private Clouds Are For

Private clouds are for businesses that:

• Handle sensitive or critical data and require enhanced security measures.
• Need a high degree of control over their environment.
• Have consistent and predictable demand for resources.
• Must comply with strict data regulations (like healthcare or finance sectors).
• Want to tailor their computing environment exactly to their needs without the constraints of shared resources.

Pros of Private Cloud

Enhanced Security: Dedicated resources mean a higher level of control and security, especially for sensitive data.

Customization: Infrastructure and services can be tailored to specific organizational needs.

Predictable Performance: Since resources aren't shared, there's often more consistent performance.

Compliance: Easier to ensure compliance with industry-specific regulations and standards when you control the environment.

Cons of Private Cloud

Higher Upfront Costs: Significant capital investment is required for on-premises infrastructure.

Maintenance: You're responsible for updates, security patches, and managing the infrastructure unless you outsource it.

Scalability Limits: The capacity can be limited by your infrastructure unless planned carefully.

Complexity: Requires specialized IT expertise to set up and manage.

Choosing Between Public and Private Cloud

If your company handles extremely sensitive data, has specific compliance needs, desires more control over its environment, or requires consistent performance, a private cloud might be more suitable.

On the other hand, if your company is looking for a solution that offers scalability, doesn't want the burden of maintaining infrastructure, wants a variety of service options, and is looking to avoid significant upfront costs, the public cloud might be a better option.

Ultimately, the decision between public and private cloud should be based on your company's specific needs, financial considerations, technical expertise, and long-term goals. Additionally, many companies opt for a hybrid cloud environment, achieving a balance between on-prem and scalable public or private resources that they can pay for by the hour.

Security

In a public cloud, each customer's cloud instance exists separately from every other. What is public is that everyone in the public shares the same resources, such as hardware, which companies that handle sensitive data may be apprehensive about doing. The advantage of using a public cloud is that the cloud provider is responsible for securing the cloud, and they can allocate resources such as around-the-cloud personnel and regular maintenance. Another advantage is the ability to store data long-term via a cloud archive, which is cost-effective since companies don't have to pay for additional on-premises storage.

Private clouds, on the other hand, are even more secure because their entire infrastructure is independent. With a private cloud, your sensitive data is behind a firewall, reducing the risk of bad actors infiltrating your cloud. The disadvantage of an on-prem private cloud is that you're taking on the burden of maintaining and securing the cloud, which is not an issue with a hosted private cloud.

Scalability

One of the primary benefits of the public cloud is the limitless scalability it provides your organization. With cloud virtualization, both public and private clouds can deploy virtual servers on-demand, allowing employees to access resources from anywhere with an internet connection. With remote work becoming increasingly more popular across the business landscape, virtual machines are a cost-effective way to give employees access to secure computing resources without investing heavily in high-end laptops or other hardware.

With an on-site private cloud, you may not be able to deploy virtual servers on demand. Private clouds are limited to a company's physical hardware and server technicians. A hosted private cloud, however, is only bound to the resources of a cloud hosting provider, which are manifold. Still, spinning up servers for a managed private cloud will be slower than doing so for a public cloud, which is worth thinking about if scalability is of the utmost importance.

Performance

The relative performance of private and public clouds is entirely dependent on the hardware. With OVHcloud, for example, customers have a wide range of hardware options to choose from, each offering varying levels of CPU, GPU, memory, and storage. Neither type of cloud environment is inherently faster, though private clouds have the advantage of not having to share resources as public clouds do.

Because private clouds place all the resources from the platform in your hands, processing power, memory, and storage are all dedicated to your organization. Private clouds are excellent choices for applications, including financial, scientific, and big data applications that depend on the lowest possible latencies.

With a public cloud, performance may be tied to bandwidth, with servers impacting all users on a server by slowing down during peak usage. On our platform, though, resources are guaranteed. You can expect a smooth and consistent public cloud experience regardless of a server's overall usage. The public cloud also allows access to different hardware configurations with more processing power or storage. Additionally, public cloud users can tap into enterprise-level GPU processing for AI over the cloud, allowing users to develop large language models (LLMs) without having to spend a fortune on expensive and hard-to-find hardware.

Support and Self-Service

On-site private clouds need a team of technicians to manage and maintain the servers around the clock. This can be expensive, however. A better, more cost-effective solution is to outsource your private cloud needs. A cloud hosting provider can offer more resources and server technicians than you may be able to afford, making managed private clouds and public clouds a lot more palatable to a company's bottom line.

Integration

To avoid vendor lock-in, companies should consider trying to use as much open-source technology as possible. Doing so can avoid maintenance costs and time-consuming customization between different technologies. Ideally, you will be able to locate cloud-based solutions that provide open standards with your in-house infrastructure.

Contractual Flexibility

Avoiding vendor lock-in is one of the strongest pros to using a subscription model with both public and private providers. In these models, which OVHcloud offers, you only pay for cloud services when you need them. If you need to scale up resources suddenly to meet the demands of a project, you'll pay slightly more for that time, but you won't be stuck paying for those additional resources down the line. More importantly, you won't be charged egress and ingress fees when you use OVHcloud, meaning you can move your data in and out of the cloud without having to worry about incurring additional costs.

Avoiding managed cloud services altogether may seem like a more affordable solution, but hidden costs, such as maintenance and repair costs, can accrue over time. In the end, hosting your servers on-site can result in paying more. A cloud hosting provider won't foot you with the bill for maintenance, hardware upgrades, or other operating costs.

Partner with OVHcloud to Uncover the Best Cloud Solution for Your Business Today

Choosing between public and private clouds depends on a company's specific needs. Public clouds offer scalability, cost-effectiveness, and ease of maintenance, ideal for businesses with variable demands. They are well-suited for a variety of applications but have potential security and performance limitations. Private clouds offer enhanced security and control, beneficial for handling sensitive data and complying with strict regulations but come with higher costs and maintenance responsibilities.

OVHcloud provides solutions for both, catering to different business sizes and needs. Dedicated servers, for example, are secure and provide a seamless experience with no slowdowns during peak hours, while cloud hosting services can securely host your website or application with an emphasis on speed and availability to your users. A hybrid approach, combining public and private clouds, can offer a balanced solution, leveraging the benefits of both to meet the diverse requirements of modern businesses.

Contact our cloud experts today to discover whether a private or public cloud solution is right for your business.