With each passing day, cloud services are becoming progressively prominent. To run their applications, companies all over the world are adopting cloud services. According to reports, cloud services are expected to grow from $126 to $163 in a year. In order to satisfy the needs of the customers, there are different kinds of cloud deployment models that are available. The three types of cloud deployments are Public, Private, and Hybrid (a mixture of Public Cloud and Private Cloud). How data is stored, how clients interact with it, and how applications run is dictated by Cloud deployment models. If you are looking for the differences between the three, then you are at the right place. Here, we would analyze their differences between the public, private and hybrid cloud solutions and the advantages and limitations of each one of them.
PUBLIC CLOUD
The most common type of cloud deployment model is the Public Cloud. In this cloud computing model, IT services are delivered through the internet. You don’t have to worry about keeping the local hardware up-to-date or about its cost. In addition to this, it would also provide an opportunity for resource sharing and salability that wouldn’t have been possible to achieve otherwise by a single organization. It offers a broad spectrum of choices in terms of solutions and resources. It has a low-cost subscription-based pricing tier system. Services on the Public Cloud can be free, fermium, or even subscription-based. Computing functionality may range from services like apps, email, and storage to infrastructure environments used for developing and testing software or the enterprise-grade OS platform. The cloud vendor is responsible for managing, developing as well as maintaining the computing resources that are shared between multiple tenants across a network. Some of the Public Cloud services include Microsoft Azure, Amazon Web Services, IBM Cloud, Google Cloud Platform.
Where can a Public Cloud solution be used?
A Public Cloud solution can be used in the following types of environment:
- Where predictable computing needs are defined
- Services and apps are necessary to perform business and IT operations.
- In places where there are additional resources requirements like varying peak demands
- During the development and testing of software
Advantages:
- It adopts a pay-as-you-go cost model means that you have to pay only for the services you use.
- It ensures high salability which means that you don’t have to invest in new hardware to set up the infrastructure according to the needs and the demand.
- You won’t be responsible for the update and maintenance of the hardware.
- Very minimal technical knowledge is required to use and set up the Public Cloud resources.
- Services on the Public Cloud are available for everyone over the internet.
Limitations:
- For large-scale usages (for mid-size to large organizations), the TCO (Total Cost of Ownership) can rise exponentially.
- The public cloud is the least secure. It isn’t well suited for sensitive and critical IT workloads.
- Low control and visibility in the infrastructure may not fit your compliance needs.
PRIVATE CLOUD
A dedicated cloud solution that is used only by a single organization is called a Private Cloud. You will not share your cloud computing resources with any other firm in a Private Cloud. You will be able to create a cloud environment in your own data-center and self-service access will also be provided. It leverages the salability benefits of the Public Cloud, but you will be solely responsible for the maintenance and purchase of the software and the hardware products. The computing resources and services are isolated and are delivered through a secured private network. It is also customizable to meet the demands of the business. With higher control and visibility into the framework, enterprises can operate sensitive workloads without compromising on performance and security.
Where can a Private Cloud solution be used?
A Private Cloud is highly suitable for:
- Government agencies and highly regulated companies
- Sensitive and vulnerable data
- Big organizations that require advanced technology to operate
- In companies that want strong security and control over their IT workloads
- In organizations that can pay for high performance and available technologies
Advantages:
- It is exclusive to one environment. It is dedicated and secured and no one from other organizations can access it.
- Compliance with strict regulations is offered by this model as the organization runs configurations, protocols, and various measures to customize security. They also meet the legal requirements.
- High efficiency and scalability will meet unpredictable demands.
- The private cloud solution is highly reliable for efficiency and performance.
- This model is very flexible. When the framework and the IT needs of the business changes, private cloud can be customized.
Limitations:
- The private cloud model is an expensive computing solution. Initial expenditure is involved for the maintenance and purchase of hardware.
- To leverage and use a Private Cloud, higher skills and expertise is required.
- The Private Cloud infrastructure might now propose high scalability to meet the demands of the data center of the cloud is restricted to on-premise computing resources.
HYBRID CLOUD
An exclusive combination of both public and private cloud, a Hybrid Cloud will leverage you with the benefits of the other two cloud platforms. It will allow you to run applications in the most appropriate location. When due to legal reasons, some data cannot be put in the cloud, Hybrid Cloud is essentially useful at that time. It also comes in handy when you want to keep the old system/ hardware running locally for applications that work only on old hardware and cannot be updated. Data workloads and applications can share the resources between Private and Public Cloud deployments based on technical policies and other aspects like performance, cost, scalability, efficiency, and security. For instance, organizations can use Private Cloud solutions for IT workloads, and to accommodate the occasional spikes in the network traffic, they can use the Public Cloud platform.
Where can a Private Cloud solution be used?
A Hybrid Cloud is best suited for:
- Optimizing the investments in cloud
- In organizations that offer multiples verticals and have issues in IT regulation, performance, and security.
- To improve the security on the existing cloud infrastructure
Advantages
- To get maximum reliability, you can divide the services across different data centers, some in private and some in public.
- Hybrid cloud increases the security posture. You can run sensitive workloads on a dedicated Private Cloud platform whereas regular workloads can be spread across the budget-friendly infrastructure like the Public Cloud.
- You get a policy-driven option in the Hybrid Cloud Solution. You can choose the computing infrastructure environment based on cost, performance and security.
- The scalability of a Public Cloud is achieved in a Hybrid Cloud without exposing the sensitive IT workloads.
Limitations:
- Switching from Private to Public Cloud can be a tedious task and can be hard to track. It will also result in unnecessary spending.
- Robust integration and compatibility are required between various cloud infrastructures that have different categories and locations. This is a drawback for a Public Cloud platform in which organizations lack direct control over the infrastructure.
- Some additional complexity is introduced where organizations manage and operate an evolving mixture of Public and Private Cloud architecture.
Then, which cloud solution to choose?
The choice between the Public, Private and Hybrid Cloud Solutions depends upon numerous characteristics like use cases, limitations, needs of your organization, budget, etc. If we look in the real world, this is not an either/or situation because enterprises prefer to leverage all three types of cloud computing solutions for each proposition.
Though it is very likely that you are already using a cloud platform or choosing one, therefore, we suggest you formulate a strategy in order to optimize the use of each cloud platform. You can commence with defining the requirements of various IT workloads and then you can choose one solution depending upon the advantages and limitations of each model.
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