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What is Cloud Computing & It's Type

March 05 2021
Author: Blogauthor
What is Cloud Computing and types

"If someone asks me what cloud computing is, I try not to get bogged down by definitions. I tell them that, simply put, cloud computing is a better way to run your business!” – Marc Benioff, Founder, CEO, and Chairman of Salesforce.

All over the IT world for the last decade, the cloud computing has been a very important and substantial part of technology. Cloud computing is one of the defining IT technologies amongst technologies such as Artificial Intelligence and Machine Learning, Internet of ThingsRobotic Process Automation, Augmented Reality/Virtual Reality. We have all heard about the cloud, and it is likely most of us use the cloud in one way or the other at a personal level – be it Dropbox or iCloud services (such as iCloud email sync) but have not realized. The true power of the cloud is at the enterprise level, and that is what truly fascinating! The global cloud computing market size was worth a massive $371.4 billion in 2020 and is expected to grow by $832.1 billion by 2025.


What is Cloud Computing?

What is Cloud Computing


Cloud computing is the delivery of computing services — including servers, storage, databases, networking, software, analytics, and intelligence — over the Internet (“the cloud”) to offer faster innovation, flexible resources, and economies of scale. You typically pay only for cloud services you use, helping lower your operating costs, run your infrastructure more efficiently and scale as your business needs change.

In other words, the cloud does away with local hardware requirements. Maintaining a server can be tedious and quite difficult for a corporation. The hardware and maintenance itself can increase the cost quite rapidly. With cloud computing, the user needs to pay only for the part of the cloud he is using. The load of the physical server, security, maintenance, etc. are all up to the service provider!


Types of Cloud Computing

There are three main types of cloud computing – public cloud, private cloud, and hybrid cloud computing. Let’s go deep to understand the types of cloud computing.

Public Cloud

A public cloud is a platform that uses the standard cloud computing model to make resources, such as virtual machines (VMs), applications, or storage, available to users remotely. Public cloud services may be free or offered through a variety of subscription or on-demand pricing schemes, including a pay-per-usage model.

Some public cloud examples include those offered by Amazon, Microsoft, or Google. These companies provide both services and infrastructure, which are shared by all customers. Public clouds typically have massive amounts of available space, good data upload speed, higher bandwidth, which translates into easy scalability. A public cloud is often recommended for software development and collaborative projects. Companies can design their applications to be portable so that a project that is tested in the public cloud can be moved to the private cloud for production. Most cloud providers package their computing resources as part of a service. Public cloud examples range from access to a completely virtualized infrastructure that provides little more than raw processing power and storage (Infrastructure as a Service, or IaaS) to specialized software programs that are easy to implement and use (Software as a Service, or SaaS).


Pros of a Public Cloud

  • Easy scalability
  • No geographical restraints
  • Cost-effective
  • Highly reliable
  • Easy to manage

Cons of a Public Cloud

  • Not considered the safest option for sensitive data


Private Cloud

Private clouds usually reside behind a firewall and are utilized by a single organization. A completely on-premises cloud may be the preferred solution for businesses with very tight regulatory requirements, though private clouds implemented through a colocation provider are gaining in popularity. Authorized users can access, utilize, and store data in the private cloud from anywhere, just like they could with a public cloud. The difference is that no one else can access or utilize those computing resources. Private cloud solutions offer both security and control, but these benefits come at a cost. The company that owns the cloud is responsible for both software and infrastructure, making this a less economical model than the public cloud.

Pros of a Private Cloud

  • High level of security
  • Great control on server
  • Easy Customizable

Cons of a Private Cloud

  • Harder to access data from remote locations
  • Requires IT expertise


Hybrid Cloud

Hybrid clouds combine public clouds with private clouds. They are designed to allow the two platforms to interact seamlessly, with data and applications moving seamlessly from one to the other. 
The primary advantage of a hybrid cloud model is its ability to provide the scalable computing power of a public cloud with the security and control of a private cloud. Data can be stored safely behind the firewalls and encryption protocols of the private cloud, then moved securely into a public cloud environment when needed. This is especially helpful in the age of big data analytics when industries like healthcare must adhere to strict data privacy regulations while also using sophisticated algorithms powered by artificial intelligence (AI) to derive actionable insights from huge masses of unstructured data.


There are two commonly used types of hybrid cloud architecture. Cloud bursting uses a private cloud as its primary cloud, storing data and housing proprietary applications in a secure environment. When service demands increase, however, the private cloud’s infrastructure may not have the capacity to keep up. That is where the public cloud comes in. A cloud bursting model uses the public cloud’s computing resources to supplement the private cloud, allowing the company to handle increased traffic without having to purchase new servers or other infrastructure.

The second type of hybrid cloud model also runs most applications and houses data in a private cloud environment but outsources non-critical applications to a public cloud provider. This arrangement is common for organizations that need to access specialized development tools (like Adobe Creative Cloud), basic productivity software (like Microsoft Office 365), or CRM platforms (like Salesforce). Multi-cloud architecture is often deployed here, incorporating multiple cloud service providers to meet a variety of unique organizational needs.

Pros of a Hybrid Cloud

  • Highly flexible and scalable
  • Cost-effective
  • Enhanced security features

Cons of a Hybrid Cloud

  • As used in both private and public clouds, the communications in network level may be conflicted


Cloud Computing Services

Cloud computing is a comprehensive term that refers to a collection of cloud computing services that offer businesses cost-effective solutions to increase their IT capacity and functionality as the business who is using has not to pay for maintenance and server but only required to pay for what using it, and the maintenance and other costs incur to maintain is manage by the businesses who is providing the service.

Businesses make the decision to choose where, when, and how they use cloud computing to ensure reliable and efficient IT solutions depending upon their specific requirements.

In this guide, we will explore three main types of cloud computing services including main deployment models that can be hosted with these environments.

There is three foremost service of cloud computing – Infrastructure as a Service (IaaS), Platform as a Service (PaaS) and Software as a Service (SaaS). There is a clear difference between all three services depending on their functionality in terms of storage and resource pooling, but they can also interact with each other to form one comprehensive model of cloud computing.


What is Infrastructure as a Service (IaaS)

Infrastructure as a Service (IaaS) is one of the most important cloud computing services as it offers virtual storage capacity, network, virtual server, connections, operating systems, and data storage devices. It requires managing all without purchasing and installing the hardware in office themselves. This cloud service is beneficial to both the business providing the infrastructure and the one using it. It allows for flexibility, reliability, and scalability that removes the need for hardware in the office. The IaaS service is ideal for small to mid-size businesses looking for cost-effective IT solutions to support business growth. IaaS service is the benefit to both as it is a fully outsourced service and the user must pay for the storage space used for and is not responsible for maintenance and other charges as it is taken care of by the business who is outsourcing the service and is available as a public, private, and hybrid infrastructure.


What is Platform as a Service (PaaS)

Platform as a service (PaaS) is a type of cloud computing service that provides a platform where customers develop, run, and manage applications without the complexity of building and maintaining the infrastructure typically associated with developing and launching an app. This is where cloud computing providers deploy the infrastructure and software framework, but businesses can develop and run their applications. It is quick and easy to create web applications via PaaS, the service is more robust and adaptable enough to support them. The solution is ideal and scalable for businesses where many developers work on a single project. Besides, PaaS allows a lot of scalability by design because it is based on cloud computing as defined earlier in the study. If you want a lean operations staff, a PaaS can be useful if your app will capitulate. The most negative of using a PaaS Cloud provider is that these services may implement some restrictions or trade-offs that will not work with your product under any circumstances.


What is Software as a Service (SaaS)

Unlike IaaS, where the user pays for the storage space used over the internet, SaaS cloud computing service involves deployment of software over the internet to various businesses who pay via subscription or a pay-per-use model. SaaS allows the cloud to be leveraged for software architecture that reduces the burden of maintenance, upkeep, services, and operations by having the application run on computers belonging to the vendor. It is a valuable tool for CRM and applications that need web or mobile access – such as mobile sales management software, Gmail, and Salesforce. SaaS is managed from a central location, so businesses do not have to worry about maintaining it themselves and is ideal for short-term projects.


Why Cloud Computing with Example?

To understand why cloud computing, let's understand with an example. A young entrepreneur decided to set up an online business. So, the person sets up a server on his own computer and takes all the necessary steps required to set it up successfully. Over time, traffic picks up and now his system is unable to take the increased load.

Now, the entrepreneur purchased server configuration and hardware to set it up. All was good till the server load reaches its maximum capacity and again the server issue is a bottleneck to traffic. What can he do now? He is forced to buy another server unit, but the increase of server units requires more space, a cooling device so it can run in a hot environment as well, and a support & maintenance team. He has also to focus on complying with the latest server protocols keeping on top of the fastest server settings and making sure none of his server’s malfunction! For this, it requires a support team who looks after that none of server malfunction.

At this point, one cloud computing service provider reaches to him and asks to migrate all its data on their cloud server platform for a certain fee based on the usage of space over cloud and pay via monthly subscription or on other terms. This will help entrepreneurs to get rid of the server maintenance cost, space, employee cost, service cost, etc and they can focus on their main business.


Advantages of Using Cloud Infrastructure

In any IT environment, a cloud is strictly considered an upgrade over traditional options. Cloud storage provides the following massive advantages:

  • Cost – Eliminated capital expenses of maintaining and running on-site data centers, cooling, power, Data center management experts, etc.
  • Speed – Cloud providers are usually huge and well-established companies. As such, server speeds are guaranteed and are usually much faster than any on-site solution.
  • Global Scale – No matter where your business takes you, cloud services have you covered! Optimized resource allocation based on your usage allows for perfect movement across geographic locations.
  • Productivity – Time saved on IT services for the on-site upkeep of servers can be used by the company in more productive tasks. Not just this, but IT teams are not needed to reduce hiring costs!
  • Performance – The largest cloud services often leverage worldwide networks of very secure data centers. They are kept updated to tackle the latest IT security threats and maintained by the best cloud architects. They have the luxury of economies of scale as well to deliver unmatched performance.
  • Security – With stringent policies, strict protocols and global teams working on the security of the cloud, it is one of the safest places you can keep your data!


Cloud Service Providers

Here are some of the popular cloud service providers:

  • Alibaba Cloud
  • Amazon Web Services (AWS)
  • Azure (Microsoft Cloud
  • Dell Cloud
  • Digital Ocean
  • Google Cloud Platform
  • IBM Cloud
  • Kamatera
  • Oracle Cloud
  • Rackspace
  • Salesforce
  • SAP
  • Verizon Cloud
  • VMware

In Conclusion:

The adoption of cloud services is the way forward for any industry in the IT field in the 21st century. Offline data centers will soon be obsolete, and it is paramount that companies keep up with the current trends. The cloud is faster, safer, more secure, cheaper and simply a more efficient solution for businesses to adopt. There is a massive global market for cloud services with many competitors, including big names like Google, Amazon, Microsoft, and Alibaba as well as specialized cloud companies all vying to deliver the best possible solutions for end-users!

Service providers like V2soft, Inc., have the expertise to help with your migration to the Cloud.  From analyzing your needs to setting up your instance, V2Soft has solutions to help any size company with their requirements. You can find out more at Cloud Service technology.