What is Cloud Computing?

If you want to run your web applications in a faster and smoother way and even at an efficient cost, this blog will be for you.

From my point of view, development cost, processing time, reliability, security, and scalability are the five determining factors for an outstanding web application. If you also fall in the same box of views, then let me dig into the concept of Cloud for you.

What is Cloud Computing?

The process of using remote servers rather than local servers is classified as Cloud computing. The concept behind the word is to store data on servers so that one can manage, access, and process data remotely just by using the internet.

That’s great. But why did we need Cloud?

Let’s break the story behind it.

Why Cloud?

  • When we use local storage, it’s hard to manage the data. We have multiple co-workers on any project. Hence, to share data, we need to transfer it personally to everyone, which is time-consuming and cost-inefficient.
  • Storing data on local servers or databases is highly insecure and cost-inefficient since it needs an operator, which adds to cost and insecurity.
  • When we rely on local servers, we have to worry about everything, including virtualization, servers, storage, and networking.
  • We have a lot to think about when the work is entirely based on local servers before scaling our business since data switching becomes a big hurdle.
  • When we access multiple devices, the processing speed is affected when using local servers.

Now we are aware of the base definition of cloud computing and the facts about why we need the Cloud?

Let’s redefine Cloud-based on how it works with co-ordinations of web applications?

Working with the Cloud:

So, Cloud Computing is using a part of a global server to store our data so that it is easily accessible by various devices and multiple locations. Using software and application as an interface, we upload our data to the Cloud, and later on, it is accessed remotely just with our device and the internet.

Companies buy servers and rent them to various companies based on specific service models and charge accordingly. These companies make money from providing services while the one who uses gets the key positiveness of the Cloud over their money.

So let’s discuss these service models.

Service models in the Cloud:

As described server owning companies use various service models to rent their servers. These models are IaaS, PaaS, and SaaS.

IaaS PaaS SaaS In Cloud Computing - Thinkcloudly


Infrastructure as a Service is shortened as IaaS. As the name says, in IaaS companies provide all the resources in need under this service over the internet. The vendor handles only the virtualization, surveys, networking, and storage part, and the rest, including OS, runtime processes, applications, and more, are in the user’s hand in IaaS model in the cloud.


PaaS can be elaborated as Platform as a Service. Under this service, in PaaS companies provide all the benefits that generate a needed platform to interpret data and applications. The vendor handles runtime processes, middleware, OS, and all the resources, data, and applications are entirely governed by the user in PaaS model in the cloud.


SaaS can be elaborated as Software as a service. As the name states, in SaaS the vendor provides the application or software over a lease under this model, and the user uses the same to process his data in SaaS model in the cloud.

Now we know how the companies provide services over the Cloud, and these companies are classified as cloud providers. Some good cloud providers in the market are AWS, IBM Cloud, Microsoft Azure, VMware, and Digital Ocean.

So being such a big thing, there must be types of clouds, or in technical language, we can say different types of deployment models in the market. Let’s look over them.

Deployment models of the Cloud:

 Deployment Models in Cloud Computing - Thinkcloudly

Public Cloud:

A service provider governs it and is available all over the internet. The providers under this criteria are AWS, Microsoft Azure, and more. The critical point here is that all the resources are entirely utilized since the user pays for only what is used.

Private Cloud:

In this model, the service provider provides you with the hosted services but to the limited peoples. Being private, the user gets delivered with a firewall which increases the security of the platform and the application and, indirectly, the most critical data.

Hybrid Cloud:

As the name states it is the combination of both public and the private cloud. The users feel the security of the private Cloud and can switch to the public Cloud when traffic on the application increases or crosses the limit of the private Cloud. Hence, a hybrid cloud provides ease of use and efficiency at the same point.

Key points to take home:

Cloud computing is the process of using remote servers rather than local servers.

Cloud computing provides us with cost efficiency, accessibility, scalability, reliability, and security.

IaaS ( Infrastructure as a Service ), PaaS ( Platform as a Service ), and SaaS ( Software as a Service ) are the three kinds of service models followed by the service providers in the market.

AWS, IBM Cloud, Microsoft Azure, VMware, and Digital Ocean are some of the excellent service providers in the market.

We have three types of deployment models for Cloud named as public Cloud, private Cloud, and hybrid Cloud.

Cloud is really intersetig to learn. You can surf over our courses for more details.

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