IaaS, PaaS, SaaS in Cloud Computing: Complete Guide

In this blog, we will discuss the Cloud service models consisting of IaaS, PaaS, and SaaS in cloud computing in detail.

IaaS stands for Infrastructure as a Service which encompasses pay-as-you-go to use storage, networking, and virtualization.

PaaS stands for Platform as a Service where virtual machines are available over the internet, and SaaS stands for Software as a Service which allows you to have software available via a third party over the internet.

What are IaaS, PaaS, and SaaS in Cloud Computing?

A cloud service model is a set of services offered by an organization over the Internet that doesn’t require on-premises software or hardware to be used.

The three main cloud service models are IaaS, PaaS, and SaaS.

IaaS (Infrastructure as a Servic): it is a cloud-based services, best for pay-as-you-go for services such as storage, networking, and virtualization.

It allows the user to use and run any software they want with their hardware in the cloud.

PaaS (Platform as a Service): One of three main cloud service models. Hardware and software tools were available over the internet.

It allows the user to create applications without needing to install anything themselves.

SaaS (Software as a Service): software that’s available on internet easily with the third party Support without any overhead.

It allows the users to use the app that they can access over the internet.

Related Article: What Is Cloud Computing? – Example, Components, Platforms

What is IaaS?

IaaS or infrastructure as a service is an offering from cloud-computing providers that enables customers to rent hardware, such as servers and storage devices over the internet.

IaaS can be attractive to customers who need extra computing power on an infrequent basis since they don’t have to purchase their hardware upfront.

Instead, IaaS users rent virtualized servers over a network, When they no longer need them, they simply shut them down.

IaaS examples include Amazon Web Services (AWS), Google Cloud Platform (GCP), Microsoft Azure Stack, and IBM Cloud for various public cloud services available today.

Related Article: What’s Google Cloud? – How It Is Different From Others?

What is PaaS?

PaaS stands for Platform as a Service. PaaS is an application development model that offers all or most of what you need to develop and run applications without having to install any software or configure servers yourself.

Basically: no server administration at all! Your app just runs on a platform made available by a third party over an internet connection.

The best (and maybe only) example of PaaS right now is Heroku, which lets you deploy Ruby and Python apps on top of their platform.

You don’t have to do anything but push your code there they take care of everything else.

And if you want to scale up, they can handle that too, You pay based on usage, so it’s cheap to get started with a new idea or prototype.

It’s very easy to use, so it’s ideal for beginners who don’t know much about how web apps work under the hood yet.

What is SaaS?

SaaS is Software as a Service; apps like Gmail or Salesforce provide online software solutions.

If you’re using a SaaS app to accomplish your business goals, it means you don’t have to worry about installing software and maintaining it.

You just pay for it and get to work! That said, there are some drawbacks to SaaS. For example, if you decide to switch providers or need support from someone other than your current provider you might run into issues.

Also, if your data isn’t backed up regularly (for example), you might lose it all when switching providers.

In general, though, SaaS can be a great option for businesses that want an easy-to-use solution without having to manage their infrastructure or servers.

IaaS Vs PaaS Vs SaaS

In a nutshell, each of these IaaS SaaS PaaS cloud service models means something different.

IaaS is a mechanism to allow software and hardware components to be provided on demand, The acronym stands for Infrastructure as a Service and it encompasses all hardware services from storage and databases through to virtualization.

It’s worth noting that there are two types of IaaS: public and private. Private is used within an organization or company whereas public can be accessed by anyone via an internet connection.

SaaS stands for Software as a Service, it’s essentially any application that you access over the internet rather than downloading onto your computer or device such as word processing applications, spreadsheets, email programs, etc.

SaaS has exploded in popularity over recent years because of its low cost, ease of use, and flexibility.

Paas is short for Platform as a Service which allows developers to build their own apps using tools hosted by another provider (the third party).

This model has grown massively in popularity with start-ups and small businesses that don’t have their own IT departments but still need sophisticated tools at their disposal.

Difference between IaaS, PaaS, SaaS in Cloud Computing

Let’s get started with a more formal definition of IaaS, PaaS, and SaaS. IaaS: It’s also called infrastructure as a service or bare metal as a service.

With it, you can rent processing cycles on physical servers hosted in data centers managed by providers such as Amazon Web Services (AWS), Microsoft Azure, and Google Cloud Platform.

You pay for each hour you use those machines to run your software applications and only for what you use.

1. Iaas: In cloud computing, Infrastructure-as-a-Service (IaaS) refers to a type of virtualization technology that allows users to access computer hardware over a network.

In layman’s terms, IaaS provides customers with access to virtual computers without having to purchase their hardware.

The big benefit here is that organizations don’t have to worry about purchasing hardware and maintaining it themselves; they simply pay for what they need when they need it.

2. PaaS: For example, Google App Engine is one popular provider of an IaaS platform. Developers who want to build their apps using custom code and Python but don’t want to deal with managing server instances and scaling databases can build their apps using App Engine.

They get an instance provided by Google that acts like a regular server on which they can install whatever software they’d like.

3. SaaS: SaaS stands for Software as a Service, It’s basically when you subscribe to use software over the internet without having to download it or install it on your computer.

You don’t access this software through a traditional desktop icon, but rather through a website on your computer.

The concept behind Software-as-a-Service (or SaaS) is simple: You pay for access to specific applications rather than purchasing them outright.

Cloud Computing vs Data Center

Cloud computing has gone mainstream, but a lot of people still don’t know what it is, One of its greatest advantages is cost-effectiveness in terms of both acquisition and maintenance.

Before we go into more detail about how that works, let’s compare a private data center with a public one.

The biggest difference between these two options is that a private data center requires you to maintain your hardware and software infrastructure.

With a public cloud, on the other hand, you can pay for only as much capacity as you need when you need it.

In addition to saving money on hardware, most businesses also enjoy significant savings by using IaaS (Infrastructure as a Service) instead of purchasing servers outright or renting space in another company’s data center.

Related Article: Why is Cloud Computing Important For Your Business?

Related Article: Data Migration From On-Premise to Cloud: How it Works?

Benefits of Cloud Computing

Businesses that use cloud computing have access to a whole range of benefits.

Rapid deployment: It enables businesses to deploy resources quickly and easily. Scalability: It makes it easier for businesses to add or decrease resources as their needs change.

Accessibility: From any location and at any time, business users can access information stored on Cloud Servers.

Pay-As-You-Go model: It is affordable since it is only billed when you need resources.

Disaster Recovery: You don’t need to worry about disasters since your data is stored safely on multiple servers in different locations around the world. iaas paas saas in cloud computing.

No interruption: The system administrator handles all these processes automatically, If a server fails, another server takes over seamlessly so there’s no interruption to service.

IaaS, PaaS, and SaaS in cloud computing From an application developer’s perspective, cloud computing means greater agility.

Examples of IaaS, PaaS, SaaS

IaaS (Infrastructure as a Service):

You have full control over your hardware but are responsible for running it. For example, you can have all your hardware but pay to use Amazon Web Services (AWS) as a remote data center. 

For example, Infrastructure as a Service (IaaS) is often categorized as: public or private.

In a public IaaS environment (such as AWS), you share hardware with others. With a private IaaS environment (also known as on-premise), you have all of your hardware.

PaaS (Platform as a Service):

There’s an operating system on top of which developers can run their applications. There are also some software tools available for development or storage.

For example, you can also look at IaaS and PaaS as being managed or unmanaged: with managed IaaS (also known as public IaaS), someone else is managing your hardware for you; with unmanaged IaaS (also known as private IaaS), you’re managing it yourself.

SaaS (Software as a Service):

Here you don’t need to install any software; instead, you access what you need via a web browser.

An example is Google Docs: users don’t need to download and install Microsoft Word they just go online and start working with Google Docs, Of course, there are many other ways to categorize these services.

SaaS (Software as a Service) is software delivered over a network, usually to multiple users.

SaaS is always organized around business or work use cases. Examples of SaaS include Salesforce, QuickBooks Online, and Zendesk.

Applications of IaaS, PaaS, SaaS

Software as a Service (SaaS) is a technology model for providing software applications to users over a network; The provider delivers applications to customers who do not need to install anything on their computers.

Instead, they access all of an application’s features using a web browser. Examples of SaaS include Salesforce and Google Apps.

Infrastructure as a Service (IaaS) is another type of cloud computing where hardware and software are provided on demand through web services such as Amazon Web Services or Windows Azure.

Platform as a Service (PaaS) provides a development platform for creating and deploying applications without having to worry about things like system configuration or maintenance.

PaaS offers tools that allow developers to focus on building applications instead of spending time managing servers.

An example of PaaS is Microsoft Azure which offers support for .NET, Java, Node.js, and PHP among other programming languages.


IaaS SaaS PaaS Each option offers a different combination of services and pricing, Choose carefully because there are many factors to consider when selecting between these three options.

While one may work for you now, chances are that your needs will change as your business grows.

Evaluate your options today so you can decide which is best for your business needs at any given time.

This way, you won’t be stuck with a solution that doesn’t meet your current or future requirements.

With each solution comes new advantages and disadvantages to weigh against each other so it’s important to understand what they all mean before making a decision.

Cloud computing gives companies access to hardware, software, and data storage over an internet connection rather than buying expensive servers or renting physical space from another company.

Related Article: Cloud Migration in Cloud Computing: Complete Guide

Leave a Reply

Your email address will not be published. Required fields are marked *