Welcome to Perusal

Types of Cloud Computing

 Types of Cloud Computing
Perusal Tech Pvt Ltd
  • 14 Sep, 2021

In our previous blog, we addressed the fundamentals of Cloud Computing (the link is at the end of this blog). We'll talk about several sorts of clouds in this section of Cloud Computing. Let's now take a look at what they are, what benefits and restrictions they have, and how they might be used.

 

TYPES OF CLOUD:

 

(1) PUBLIC CLOUD:

 

A public cloud, as its name implies, is open to the public and is the most prevalent type of cloud. Anyone, whether an individual or a company, can easily begin to use public cloud resources and services. There is no large cash investment required upfront. You won't have to spend money on pricey hardware or worry about cloud setup and maintenance. This is because, under the public cloud, the cloud service provider procures and owns all of the infrastructure, such as physical servers, storage, and networking. This cloud service provider is in charge of setting up and maintaining the cloud. A public cloud is something like Microsoft Azure or Amazon Web Services.

 

To use a public cloud, we require an internet connection, and the cloud service provider provides a web portal for managing cloud services and resources. We pay a monthly charge to the cloud service provider for the cloud services and resources we use. This monthly price is similar to your water or electricity bills. It's the pay-as-you-go concept, for example, where you only pay for what you use. The public cloud is accessible to everybody.

 

Your organisation shares the same hardware, storage, and network devices as other organisations in a public cloud. This is referred to as multi-tenancy in Cloud Computing. Data from your organisation may be stored on the same storage device as data from other companies.

 

BENEFITS OF A PUBLIC CLOUD:

 

(1) NO UP-FRONT CAPITAL EXPENSE: There is no need to purchase expensive hardware or build up your own data centre, thus there is no upfront capital investment.

 

(2) PAY-AS-YOU-GO: It is in favour of the pay-as-you-go concept. Just like your monthly water or energy bills, you simply pay for what you use.

 

(3) NO MAINTENANCE: There are no headaches with maintenance. You, as a consumer, don't have to worry about keeping the public cloud up to date, such as replacing damaged hardware, applying security patches, and so on. The public cloud is kept up to date by your service provider. You only have to pay a minimal monthly cost depends on how much Cloud Computing you utilise.

 

(4) HIGHLY SCALABLE: In the public cloud, you will rarely run out of resources. You can scale resources up and down depending on your business needs. Setting threshold limitations can potentially automate this process.

 

(5) RELIABLE: A public cloud is a massive network of servers. As a result, data is constantly backed up. This means that data loss is not caused by hardware failure, power outages, natural disasters, or other emergencies. To summarise, the public cloud is quite dependable.

 

LIMITATIONS OF A PUBLIC CLOUD:

 

(1) LOW VISIBILITY AND CONTROL: The cloud service provider owns the public cloud infrastructure. As a result, you have limited sight and control over it.

 

(2) COMPLIANCE AND LEGAL RISKS: Because you have little visibility and control over public cloud infrastructure, you rely on the cloud service provider to protect data and follow local and international rules. If the cloud service provider fails to deliver and there is a data breach, your firm may still be held accountable. As a result, for security-sensitive or mission-critical applications, the public cloud may not be the best option.

 

(3) COST CONCERNS: Cloud computing cuts upfront infrastructure costs and offers greater flexibility due to its pay-as-you-go concept. The overall price you pay is determined by traffic, the number of cloud resources you utilise, the plan you choose, and how you scale resources up and down. The total cost may be higher than you anticipated.

 

USE CASES FOR A PUBLIC CLOUD:

 

(1) UNLIMITED SCALABILITY: In the public cloud, we never run out of resources. It has nearly limitless scalability. So, if you want to scale up and down as needed, the public cloud is the way to go.

 

(2) VARYING PEAK DEMANDS: The public cloud is extremely beneficial to businesses with varying peak demands. When demand is high, you scale up; when demand is low, you scale down, paying only for what you use.

 

(3) FAST-GROWING COMPANIES: The public cloud is also beneficial to rapidly expanding organisations. They can use the public cloud to quickly scale up their operations rather than building their private cloud, which requires not only a large upfront capital investment but also a significant amount of time. Businesses may take advantage of the public cloud by employing it for backup and disaster recovery.

 

(2) PRIVATE CLOUD:

 

A private cloud, as the name implies, is exclusive to one company. To put it another way, private cloud resources and services are only used by one company or organisation. Private cloud resources, unlike public cloud resources, are not shared by numerous businesses. The whole hardware and software infrastructure is dedicated to a single organisation. The private cloud can be physically situated on-premise, at your company's data centre, or it can be hosted by a third-party service provider. The crucial thing to remember is that a private cloud is private, which means that all of the hardware, software, and infrastructure is devoted to one and only one business.

 

It's quite straightforward to tailor the hardware and software in a private cloud to match your organization's specific IT needs. This is because your company controls everything, including the hardware, software, and network. As a result, you have complete control and can adjust anything to match your organization's needs. Government agencies, financial institutions, and another medium to large-sized companies with business-critical activities that desire increased and total control over their cloud environment frequently employ private clouds.

 

BENEFITS OF A PRIVATE CLOUD:

 

(1) INCREASED SECURITY: No resources are shared with other organisations. As a result, a private cloud provides more security.

 

(2) BETTER CONTROL: A private cloud is owned by a single company. As a result, you can tailor it to your specific company requirements.

 

(3) PREDICTABLE COST: With a private cloud, you own all of the cloud infrastructures and don't have to pay a third-party cloud provider. As a result, your cooling, electricity, and maintenance costs are usually predictable regularly.

 

(4) LEGAL COMPLIANCE: When dealing with regulated data, such as financial, health-care, or credit card information, there are tight guidelines for where it is held, who can handle and process it, and how it is safeguarded. You know where your data centre is with the private cloud. So now you know where your data is stored and how it is safeguarded.

 

LIMITATIONS OF A PRIVATE CLOUD:

 

(1) LIMITED SCALABILITY: We have limited scalability using a private cloud. The amount of infrastructure you have limited the amount of scaling you can do in a private cloud. You can't scale up past a certain point. As a result, infrastructure is a constraint, and you may not be able to scale up and down as easily as you can in the public cloud.

 

(2) LARGE INITIAL CAPITAL INVESTMENT: With the private cloud, you must purchase all cloud infrastructure as well as engage a team to set up and maintain the cloud. As a result, a private cloud is more expensive than a public cloud option, particularly for short-term projects.

 

(3) ACCESS LIMITATION: A private cloud is typically more secure. We utilise it for security-sensitive apps, and because of the high-security safeguards in place, mobile users outside of the business network may have limited access to the private cloud.

 

USE CASES FOR A PRIVATE CLOUD:

 

(1) HIGHLY REGULATED ENTITIES: A private cloud is best suited for highly regulated organisations such as banking and healthcare institutions.

 

(2) TECH FIRMS REQUIRING COMPLETE CONTROL: The private cloud is beneficial to tech companies that want strong security and complete control over their cloud infrastructure.

 

(3) LARGE ENTITIES NEEDING CUSTOM SOLUTIONS: A private cloud is particularly beneficial to large enterprises that demand specialised and customised data centre solutions.

 

(3) HYBRID CLOUD:

 

A hybrid cloud, as the name implies, is a hybrid cloud that combines both private and public cloud resources. It's not a completely distinct cloud. It's only that the private cloud and public cloud collaborate to satisfy the needs of businesses. It combines the advantages of both worlds. We can, for example, use the private cloud for security-sensitive business-critical processes like financial reporting and the public cloud for high-volume, low-security demands like web-based email.

 

Cloud bursting is a concept that exists in a Hybrid Cloud. This may sound like a complex technical phrase, but it just means:

 

Assume you have a service or an application. To begin, it is hosted and run in your private cloud. Until there is a spike in demand, the application continues to run in your private cloud. When demand spikes, burst through to the public cloud to make use of the public cloud's additional computing resources, and when demand drops, scale down to only your private cloud and stop using the public cloud's resources.

 

If you're wondering why there will be such a dramatic increase in demand, consider the following. There are numerous explanations for this. Perhaps you're launching a new company or product line. Seasonal activities, such as online Christmas shopping or tax filing, may potentially increase traffic and, as a result, demand for your app or service.

 

You only have so much physical infrastructure with a private cloud. The physical infrastructure determines how much you can scale up. If you want to scale up beyond a certain point, you'll need to acquire more hardware, which is not only expensive but also time-consuming to procure and set up, and then we'll stop utilising it once the spike in demand has passed.

 

BENEFITS OF A HYBRID CLOUD:

 

(1) BEST OF BOTH THE WORLDS: The obvious advantage is that a hybrid cloud combines the best of both private and public clouds.

 

(2) BETTER CONTROL: You have more control over what operates wherein the hybrid cloud. For example, a private cloud can be used for security-sensitive applications, whereas a public cloud can be used for apps that have a lot of traffic but aren't as secure.

 

(3) COST EFFECTIVE: With the hybrid cloud, you only use public cloud resources when you need them, such as when you have a sudden increase in demand and need to employ the extra processing capacity supplied by the public cloud. When demand drops, you can scale down to simply your private cloud.

 

LIMITATIONS OF A HYBRID CLOUD:

 

(1) LIMITED VISIBILITY AND CONTROL: Just like in a public cloud, you don't have much visibility or control over the infrastructure controlled by the public cloud service provider in a hybrid cloud.

 

(2) ADDITIONAL COMPLEXITY: Integrating a private cloud with a public cloud adds to the complexity of the infrastructure. Additionally, maintaining and evolving these two separate types of clouds as the organization's demands change necessitates a significant amount of effort, time, and complexity.

 

(3) COMPLIANCE AND LEGAL RISKS: Because you have no visibility and control over the public cloud infrastructure, you must rely on the public cloud service provider to protect your data and follow local and international rules. If the public cloud service provider fails to perform as expected and there is a data breach, the organisation may still be held accountable.

 

(4) COST CONCERNS: If you use public cloud services for an extended period, the total cost may be larger than you expected.

 

USE CASES FOR A HYBRID CLOUD:

 

(1) BEST OF BOTH THE WORLDS: Hybrid cloud combines the advantages of both private and public clouds. For example, let's say you're an IT firm that serves two types of customers. Security isn't a major worry for one group of clients. They simply want to be able to scale up and down at their leisure. You can use public cloud resources for this set of clients.

 

Security is the most crucial factor for the second set of clients, and they desire comprehensive and strict control over the cloud infrastructure. You can employ private cloud resources for this group of clients. So, the point we're trying to make is that a hybrid cloud allows you to switch between multiple delivery methods based on the security and scalability requirements of your clients.

 

PRIVATE VS PUBLIC VS HYBRID CLOUD:

 

(1) CLOUD HARDWARE:

 

PUBLIC CLOUD: The infrastructure for the public cloud is provided by a public cloud service provider such as Amazon or Microsoft.

 

PRIVATE CLOUD: In the case of a private cloud, the entire cloud infrastructure, including physical servers, storage, and networking, must be purchased by the private cloud's owner.

 

HYBRID CLOUD: Keep in mind that a hybrid is only both private and public clouds collaborate to suit the organization's requirements. So, for the private cloud, your company must provide the infrastructure, whereas, for the public cloud, the infrastructure is provided by the public service provider.

 

(2) TENANCY:

 

PUBLIC CLOUD: It is a multi-tenant cloud that is used by multiple organisations.

 

PRIVATE CLOUD: It is a cloud that is typically utilised by a single business, or tenancy.

 

HYBRID CLOUD: The hybrid cloud's private component is used by a single organisation, whereas the public part is used by several organisations.

 

(3) DATA CENTER LOCATION:

 

PUBLIC CLOUD: The corporate network of an organisation. Public clouds such as AWS and Azure data centres, for example, are often located in a variety of nations throughout the world.

 

PRIVATE CLOUD: A private cloud data centre is usually located within an organization's corporate network, whereas a public cloud data centre might be located anywhere on the internet.

 

HYBRID CLOUD: It is the one in which the private cloud is located within the business network and the public cloud is located anywhere on the internet.

 

(4) SCALABILITY:

 

PUBLIC CLOUD: In a public cloud, we never run out of resources. It has nearly limitless scalability.

 

PRIVATE CLOUD: The amount of infrastructure in a private cloud limits its scalability. It is impossible to scale up beyond a certain point unless the company purchases and configures extra hardware.

 

HYBRID CLOUD: The underlying available infrastructure limits the scalability of private cloud services and resources, however with public cloud services, this is not the case.

 

(5) CLOUD MAINTENANCE:

 

PUBLIC CLOUD: The cloud service provider is in charge of setting up and maintaining the public cloud. Public cloud services are available to organisations and the general public for a monthly subscription.

 

PRIVATE CLOUD: The private cloud is set up and maintained by the organisation itself.

 

HYBRID CLOUD:A private cloud is controlled by its owner, whereas a public cloud is managed by the cloud service provider.

 

(6) COSTS:

 

PUBLIC CLOUD: There is no upfront cost with the public cloud, but you do have to pay a monthly subscription for the services you utilise. You will have to pay more, the more you utilise these services. The total cost may be larger than you expected, especially if you use a lot of public cloud services and have done so for a long period.

 

PRIVATE CLOUD: The cost of a private cloud is high at first since the company must buy all of the cloud hardware, set it up, and maintain it. The company will need to hire people to maintain the private cloud. As a result, there is a monthly operational expense.

 

HYBRID CLOUD: With a private cloud, an organisation must pay both an initial capital expenditure and ongoing operating expenses to keep it running. You pay a monthly charge for the services and resources you utilise in the public cloud.

 

(7) ACCESSIBILITY:

 

PUBLIC CLOUD: A public cloud is open to the whole public, allowing anybody to use its resources and services.

 

PRIVATE CLOUD: Private cloud resources and services are only accessible by the entity that owns the private cloud.

 

HYBRID CLOUD: Public cloud services can be accessible by anybody, whereas private cloud services can only be accessed by the business that owns them.