Cloud Computing may be a general term for delivering hosted services over the Internet. Infrastructure as a Service (IaaS), Platform as a Service (PaaS), and Software as a Service are the three main categories or sorts of cloud computing into which these services fall (SaaS).

A cloud is often either public or private. Anyone online can buy services from a public cloud. With specific access and authorization settings, a personal cloud is a proprietary network or data center that offers hosted services to a small group of users. Cloud computing’s objective, whether private or public, is to supply simple, scalable access to computer resources and IT services.

The hardware and software elements necessary for a cloud computing model’s correct execution are included in the cloud infrastructure. Utility computing and on-demand computing are other terms for cloud computing.

In this blog, we will cover the following cloud fundamentals topics:

Cloud computing: What is it?

The technology that powers the cloud is called “cloud computing.” This comprises virtualized IT infrastructure of some kind, such as servers, operating systems, networking, and other infrastructure that has been abstracted using specialized software to allow pooling and dividing without regard to physical hardware boundaries. One physical server, for instance, could be split up into several servers.

Features Of Cloud Computing

On-Demand Self-Service: With cloud services, users can provide and manage computing resources as needed without the assistance of human administrators.

Broad Network Access: Computing services are typically offered over established networks and a variety of hardware.

Resource pooling: The present IT resources (such as computing, networks, storage, applications, and database services) are shared in an ad hoc way across various applications and users. The same physical cloud resource can serve multiple clients at once.

Rapid Elasticity: The computing services should be equipped with IT resources that can expand out quickly as needed. The user will receive benefits whenever he requests them, and the system will scale out when his need has been met.

Measured Service: Each application and occupant’s resource usage is logged and monitored. This information is sent to both the resource provider and the user, who are responsible for how the resource was utilized. This is carried out for several reasons, including resource efficiency, security concerns, and billing oversight.

Why Use the Cloud?

High Scalability: Your operating and storage requirements can be scaled up or down as rapidly as necessary to fit your demands, giving you the necessary flexibility. Your cloud service provider may take care of all of this for you rather than you having to buy or provision the costly updates yourself. Utilizing the cloud will enable you to free up time to focus on managing your organization.

More Flexible: Businesses have more freedom with the cloud overall than with hosting on a local server. Additionally, if you need more bandwidth, a cloud-based solution may rapidly satisfy your needs rather than requiring an involved (and costly) update to your IT infrastructure.

Reduced Infrastructure Cost: Making the switch to the cloud could lower the cost of running and maintaining your IT infrastructure. By utilizing the resources of your cloud service provider, you can cut expenses by avoiding the need to buy pricey assets and machinery for your company. You might be able to lower your management and operating expenses because

● Your contract may cover the price of system upgrades, new hardware, and software.

● Paying expert staff’s compensation is not necessary

● Your energy costs could be decreased.

● Less time is lost in delays.

Increased Security: Security is essential to many clients using the cloud. Based on their reputations for honesty, confidentiality, and resilience, as well as the safety services offered by their suppliers, users will purchase more than they would in traditional environments. This is a compelling reason to improve security best practices and boost competition among cloud providers in this area.

High Availability: High availability refers to a system (a network, a server array or cluster, etc.) that prevents service interruption by minimizing planned downtime and decreasing or managing faults. When a person’s life, health, or well-being—including financial well-being—is on the line, an organization’s system is expected to be highly available.

Disaster Recovery: Controlling resources is one element that makes a firm successful. There will always be events beyond your control, despite how in control your company may be regarding its processes. Since downtime in your services results in lost productivity, revenue, and organization reputation, there is something you can do to hasten your recovery. Cloud services offer speedy data recovery for emergencies, including power outages and natural disasters.

Fault Tolerance: The term “High Availability” refers to a system (a network, database, storage, server array or cluster, etc.) that is made to minimize scheduled downtime and reduce equipment failures to prevent service interruptions. When a person’s life, health, or well-being—including their financial well-being—is on the line, the system in an organization is expected to be highly available.

No Restrictions on Location: You can access your data with cloud computing from anywhere, including your home or business (providing you have an internet connection). You can quickly connect to your virtual office if you require access to your data while off-site.

Cloud Service Model

There are three different models for cloud services. You may choose the best collection of services for your needs by selecting the level of control, flexibility, and management each type of cloud computing offers. The following are the three cloud service models:

Infrastructure As A Service (IaaS)

● It is the most adaptable cloud service, allowing you to rent hardware, including the fundamental IT and cloud building blocks.

● You have total control over the system that the programme is running on thanks to it (servers, VMs, storage, networks & operating systems).

● IaaS provide the highest level of flexibility and administrative control over your IT resources.

● IaaS examples include EC2 or VM (both from AWS), storage, and networking.

Platform As A Service (PaaS)

● A ready-to-use development environment is provided by the PaaS cloud service paradigm, allowing developers to focus on creating and running high-quality code to make unique apps.

● You may easily construct an application with the aid of PaaS without having to manage the supporting infrastructure. For instance, you don’t need to install the OS, web server, or system patches while launching a web application utilizing PaaS. You can, however, increase the resources and give your services new features.

● Examples of PaaS include Oracle Database Cloud Service from Oracle Cloud, Elastic Beanstalk or Lambda from AWS, WebApps, Functions, or Azure SQL DB from Azure, Cloud SQL DB from Google Cloud, or Cloud SQL DB from Azure.

Services as a Software (SaaS)

● With software as a service, the service provider runs and manages the entire product for you.

● In this cloud service model, the software is hosted online and made accessible to clients via subscription or outright purchase.

● You don’t have to worry about how the service is maintained or how the underlying infrastructure is maintained while using a SaaS product. It would be beneficial if you imagined using that particular software in that way.

● Microsoft Office 365, Oracle ERP/HCM Cloud, SalesForce, Gmail, or Dropbox are a few examples of SaaS.

Which Cloud Service Model To Learn?

Which Cloud Computing Service Model should I learn is one of the most frequent queries we receive from students.

Therefore, if you work as a system administrator, you should become familiar with platforms and infrastructure (IaaS) (PaaS). The rationale is that PaaS always operates on top of IaaS, regardless of what you are developing or installing on top of it. You should be familiar with both SaaS and IaaS for this reason.

You should get familiar with Software as a Service if you work as a consultant, a financial consultant, or on a packaged programme like SAP, HRMS, etc. (SaaS).

Cloud Deployment Model

Three different cloud deployment models are available. Each deployment model is specified to consider the location of the environment’s infrastructure. The following are the cloud deployment models:

Public Cloud: The Public Cloud comprises many clients who host their data, files, programmes and other resources on a virtual server. Through a service provider, these services are made accessible to the broader public and are shared by numerous clients. Public Cloud Services are either provided for no cost or on a pay-per-use basis. The infrastructure is often owned and run by service providers like AWS, Microsoft, and Google, which merely provide access through the Internet.

Microsoft Azure and Amazon Web Services (AWS) (GCP) are examples.

Private Cloud: A private cloud is a computer platform that gives you access to an intimate environment exclusive to one company or organization. Like other kinds of cloud computing systems, the private cloud offers expanded, virtualized computing resources through physically stored on-site or at a vendor’s data center components.

Examples include Elastra’s private cloud, Microsoft’s Azure, HP Data Centers, and Ubuntu.

Hybrid Cloud: What its name implies, the hybrid cloud model is just that. It is a mix of two or more cloud solutions, ranging from Private Cloud to Public Cloud, and the subscriber can sign up for it.

The hybrid cloud’s main advantage is the functionality of services made available to clients, such as various deployment patterns. As more firms adopt cloud solutions as a foundational component of their business model using technology, the hybrid cloud model is becoming more in demand and well-known.


Cloud computing is approaching the stage where it is expected to account for more enterprise tech investment than the decades-old methods of delivering apps and services in-house. Find out more about cloud computing.

However, cloud adoption will only rise as organizations become increasingly comfortable with the idea of their data being stored somewhere other than a computer in the basement. And instead of focusing solely on cost, cloud computing companies are increasingly promoting cloud computing as a driver of digital transformation. Moving to the cloud, the argument goes, may help enterprises rethink business processes and expedite business change by breaking down data silos within organizations.