What is SaaS, PaaS, and IaaS?
Tags: saas, paas, iaas, infosectrain
Published: 2023-07-12 08:33:15

Cloud computing has brought about a revolutionary shift in the way businesses operate, empowering them to harness the potential of scalable and flexible services delivered via the Internet.

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There are three prominent service models of cloud computing: Software-as-a-Service (SaaS), Platform-as-a-Service (PaaS), and Infrastructure-as-a-Service (IaaS). These fundamental building blocks of cloud computing can empower your business and help you achieve your goals in the digital era.

This blog post gives a thorough overview of these models, including their features and how they work, demonstrating the power of cloud computing services.

## **What is SaaS?**
We all, knowingly or unknowingly, use SaaS the most in our day-to-day lives. Simply put, SaaS delivers software and applications over the Internet via a subscription model.

Compared to the traditional software model where users had to manage, install and upgrade softwares themselves, SaaS enables the use of application software on demand without installing or maintaining them locally.

## **How does SaaS work?**
SaaS operates as a cloud-based software delivery model wherein a provider hosts applications and users access them remotely via the Internet. Either a software provider will host the application and related data using its servers, databases, networking, and computing resources, or an ISV (Independent Software Vendor) may hire a cloud provider to host the application in the provider's data center. All you need is a device with a network connection, and you can access it anywhere.

Some notable examples of SaaS are Google Workspace, Zoom, Microsoft 365, and many more.

## **What is PaaS?**
PaaS, another important cloud computing service model, enables developers to build, run and manage software applications without worrying about managing and maintaining the platform's underlying infrastructure on-premises.

In the PaaS model, you are only in charge of collecting data and application resources; everything else, like servers, networks, storage, databases, and operating system software, is maintained by a cloud provider.

## **How does PaaS work?**
PaaS makes application development more manageable by giving developers a platform to create and distribute applications. It allows developers to concentrate on coding while the PaaS provider manages the servers and networking.  

Some notable examples of PaaS are Google App Engine, Heroku, and many more.

## **What is IaaS?**
Iaas is a rented virtual server from another organization that owns a data center. IaaS encourages access rather than ownership. Customers install and configure their software while IaaS providers manage the infrastructure. 

## **How does IaaS work?**
IaaS delivers virtualized computing resources over the Internet, allowing businesses to access and manage infrastructure components like servers, storage, and networking. This primarily benefits the young and growing companies, saving them time and money. 

Some notable examples of IaaS are AWS EC2, Azure Virtual Machine, and more.

## **Final words:**
Cloud computing has rendered traditional on-premise services obsolete and completely transformed businesses' operations in an increasingly competitive environment. 

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