What is Cloud Computing, and why do we need it? Cloud Computing is not just a buzzword anymore; it is practically everywhere today. If you are trying to learn more about Cloud Computing, you have come to the right place. We have put together everything that you need to know to get started in this domain. 

In this article, we are going to answer several of your questions, like, ‘What is Cloud Computing in simple terms?’, ‘What is Cloud Computing with example?’ or ‘What is Cloud Computing definition?’.

Cloud computing

Let’s look at the basics of what is Cloud Computing, how it started, and how it empowers all the innovation around us.

In the earlier days of computing, companies used to own and run all the hardware and software such as servers, operating systems, and network devices like routers and switches, which required significant investments in terms of the cost of equipment, electricity, software, and personnel required for maintenance. As the years went by, the rapid innovation in technology required frequent upgrades to software and hardware, which increased ownership costs. The need for optimizing costs, simplifying maintenance, and bringing together geographically spread computing resources led to the rise of what is known as the Cloud Computing technology.

  1. Definition of What is Cloud Computing?
  2. What are the benefits of Cloud Computing?
  3. What are the types of Cloud Computing?
  4. What are the various types of cloud services?
  5. What are the uses of cloud-based computing?

1. Definition of What is Cloud Computing?

Cloud Computing refers to the overall technology that enables the delivery of computing services and resources such as servers, storage capacity, database technology, networking capabilities like domain controllers, load balancing, and operating systems over the internet or ‘the cloud.’ 

Sounds interesting, right? Cloud Computing has gained a lot of popularity in the last decade, and with the changing workforce ecosystem in 2020, cloud adoption has increased magnificently. According to Statista, the global IT services spending has reached $952B in 2020. These numbers speak for themselves. The sheer volume of the expenditure on Cloud Computing shows how fast businesses are transitioning to Cloud-based resources.

Now, let’s look at what is Cloud Computing and how it works.

2. What are the benefits of Cloud Computing?

A) Cost

One of the significant benefits of shifting to Cloud Computing is reduced costs associated with purchasing and maintaining the hardware infrastructure required for your computing needs. The virtual resources such as servers, network configurations, databases, software, and other services like analytics are pay-per-use, where you pay only for what you use. Cloud Computing also helps reduce the overall cost of ownership for infrastructure resources.

B) Speed and performance

Cloud Computing provides access to on-demand computing power that can be scaled up and scaled down as required. In simple terms, it means that when more users are accessing the websites or apps powered by Cloud Computing technology, the servers provide more processing power and RAM to these apps to run efficiently. In contrast, when the user load reduces, servers scale down automatically. It not only offers excellent performance and user experience but also leads to cost-effectiveness.

C) Global-scale

Another benefit of Cloud Computing is that computing power can be scaled elastically, and it can be made available to any geographic location across the globe. While using cloud services, a user typically receives processing power and datasets from the nearest data center. This process leads to excellent performance and user experience. 

D) Reliability of service

Cloud Computing comes with built-in functions such as disaster recovery, automated data backups, and failover capabilities. The applications and data can be mirrored on redundant servers so that if one fails, the other server takes over. It significantly reduces risks and provides guaranteed service performance.

E) Security

Cloud Computing providers offer robust security controls, policies, and required technologies to secure your data, apps, and overall infrastructure from potential security threats.

Now that we know the meaning of what is Cloud Computing as well as its benefits, let’s dive further.

3. What are the types of Cloud Computing?

Based on your specific needs, Cloud Computing can be set up in three flavors, namely public cloud, private cloud, and hybrid cloud. Let us look at the types of Cloud Computing and services in more detail and examples of leading Cloud Computing service providers.

A) Public cloud

In the public cloud case, the entire infrastructure such as servers, storage, and other capabilities are hosted and managed by third-party cloud service providers like Microsoft Azure, Amazon AWS, etc. In the public cloud setup, the physical infrastructure may be shared between different businesses or organizations.

B) Private cloud

A private cloud allows cloud-based computing resources to be used exclusively by a single business or organization. You can set up a private cloud on your company’s private on-premise data center, or it can also be outsourced to a third-party cloud service provider to host and manage it on a private datacenter.

C) Hybrid cloud

A hybrid cloud takes the approach of combining benefits from both private and public cloud setup, where the applications and data are shared between both the clouds. This setup increases flexibility in deployment choices and enhances your existing infrastructure selectively, based on business requirements, security requirements, etc. 

4. What are the various types of cloud services?

There are four broad categories in which the cloud services fall into: 

Together, these categories form the overall stack of Cloud Computing as they provide a comprehensive set of technologies and services.

A) Infrastructure as a Service (IaaS)

IaaS means that instead of owning hardware infrastructures such as servers, databases, virtual machines, and server software, you pay a cloud provider to use their hosted infrastructure. Typically, you spend on a pay-per-use basis.

B) Platform as a Service (PaaS)

PaaS refers to Cloud Computing services that provide the on-demand environment required to develop, test, deploy, and manage software applications. PaaS takes away the hassles for developers to manage the servers and store the databases needed for development and testing so that they can focus on the actual application development.

C) Serverless Computing

Serverless architecture is another trend in Cloud Computing, where the cloud services providers manage the entire setup and servers. Serverless architecture is event-driven and scalable. 

D) Software as a Service (SaaS)

Software as a Service refers to providing readymade software applications over the internet. It can be synonymous with renting software on a subscription basis. In the SaaS model, the provider handles software development, updation, as well as maintenance. 

Now that we know what Cloud Computing technology is and how it is categorized, let’s move on to its usage.

5. What are the uses of cloud-based computing?

Cloud Computing might not be evidently visible, but it is everywhere. Banking applications, search engines, eCommerce portals, apps, social media platforms, video streaming services, and several other applications leverage Cloud Computing to deliver a great user experience. 

Let’s proceed to the next section where we’ll discuss: ‘What is Cloud Computing with example and real-life use cases.’

A) Cloud-based applications development

Today, various technologies are cloud-native and support advanced capabilities, such as microservices architecture, containers, Kubernetes, and DevOps. These capabilities reduce the application development, testing, and deployment timelines and reduce the time to market.

B) Cloud-based data backup and collaboration platforms

Many powerful cloud-based applications are popular today, such as Dropbox, Google Drive, OneDrive, etc. With cloud capabilities, you can back up and retrieve your data securely from anywhere in the world.


Summing up about What is Cloud Computing, it takes away the burden of maintaining infrastructure. You can avail of the same resources from a dedicated Cloud Computing service provider. Cloud Computing also provides exciting opportunities and new ways of building future applications by bringing different technologies together. If you are interested in learning more about Cloud services and its development, deployment and migration, browse through our PG Certificate Program in Cloud Computing that will help you become a complete cloud professional.