Choosing the right cloud service: IaaS, PaaS, or SaaS

You know what the cloud is quite a hot topic for small businesses to other global or wide companies but stays a widespread concept that subsumes a lot of online territories. The rising number of businesses are kept opting for such cloud services. If you are familiar with such topics, cloud computing is when the hardware (servers, storage, etc.) and software are rendered all over the internet.

So what the heck is “the cloud or cloud computing”?

If you consider switching your business to the cloud, whether it be for the particular application or any of the infrastructure deployment, it is simply more crucial than ever to understand the major differences and impeccable advantages of such cloud services.

Below, we are going to break down the main cloud computing models and show you how they could help drive innovation and improvements in your own business. But before just take a look over the contents what we are going to cover up in the entire blog that must be helpful to your business.


What is SaaS/PaaS/IaaS?

How does SaaS, PaaS & IaaS work?

SaaS/PaaS/IaaS delivery

Advantages of SaaS, PaaS & IaaS

What are the Characteristics of SaaS/PaaS/IaaS?

When to use SaaS, PaaS, or IaaS?

What are the Limitations & Concerns of SaaS/PaaS/IaaS?

Example of SaaS, PaaS, & IaaS

What is SaaS?

SaaS (Software as a service) is a form of cloud computing that delivers an application- and all its underlying IT infrastructure and platforms- to its great users. It can be an ideal solution for the businesses and so for the individuals that:

  • Do not want the responsibility of maintaining infrastructure, platforms, and software.
  • Have challenges that require minimal customization to solve.
  • Favour software subscription models.

SAAS is a part of cloud computing and only deals with the software which are provided on the cloud as a service.

That is:

Instead of purchasing the license and installing the software in your own system, you rent the usage of the software and access it over the internet.

Examples of SAAS:

  • Google Apps
  • Microsoft Office 365

If we look up to its history or the background then it is the first and the major generation of SaaS solutions that were simply soiled, inflexible, and designed to solve an individual business problem. Since then, SaaS (software as a service) has fully evolved dramatically.

Today, a modern cloud suite can span- and connect everything from the major technologies from financials, other human resources, procurement, and supply-chain processes to commerce, marketing, sales, and other service solutions. Other advantages of a modern, complete SaaS solution comprise:

  • Connected, end-to-end business processes built-in
  • Ease of configuration and personalization
  • Rapid data portability
  • Comprehensive cloud security
  • Embedded analytics
  • Support for emerging technologies, from artificial intelligence (AI) to chatbots, Internet of Things (IoT), and more

How does SaaS work?

Software as a product has many limitations:

  • You have to invest in purchasing its license and also in upgrading their hardware to run the software
  • A lot of time and money is spent on customization of the SAAP as per your requirements.
  • The data is stored only on one device or server (if you’re using LAN)
  • To update the software, you either have to buy the updated version or download the update from the internet which resulted in a wastage of time and the internet.

Implementing and choosing the SaaS model has helped many of the developers effectively by removing/minimizing these limitations. Software as a service requires only an individual prerequisite i.e. “the internet”.

Mainly it hosts the software and the entire data on the cloud and lets the developer update the software but all without you downloading anything.

The SaaS applications are otherwise called hosted software, on-request software or electronic software. The applications come under SaaS are very valuable and usually cost-effective, solutions tailored to approach the basic and specific requirements. Their major functionality tends to be determined and comparatively firm.

In the other terms, when implementing a SaaS application its intact data and functionality that create the user experience are being rendered from the server of the provider and not installed locally in the users’ own system or intranet.

Examples of SaaS

    • Google Apps,


    Microsoft Office 365


What is PaaS?

Now, some people who are in the early information-gathering stages often wonder “What is PaaS in the field of cloud computing”? or “How does it compare to the SaaS/IaaS”?

This blog answers those questions and provides some insights that may be beneficial for the individuals deciding which cloud computing options are accurate for the requirements of their organization.

PaaS gives the infrastructure and middleware components that enable developers, IT administrators, and end-users to build, integrate, migrate, deploy, secure, and simply maintain mobile and applications of web. The PaaS solution is hosted in the cloud and it is accessible to every user through their internet connection and web browser. It is one of the three fundamental service models of cloud computing in addition to infrastructure-as-a-service i.e. IaaS and Software-as-a-service i.e. SaaS.

In many of the cases, the PaaS platform focuses on software development and aligns accurately along with the cloud-based development such as mobile and new web applications.  Nowadays, Google is one of the most prominent PaaS vendors in this colossal world. Engineers that run applications on the Google App Engine benefit by a service-level agreement (SLA) that simply guarantees them 99.95% service availability, as the App Engine is created to accommodate multiple data centre outages without any unplanned downtime.

The PaaS service gives great costs and time savings for a business as it enhances the actual productivity through a quicker time to market. Some of the significant characteristics of a PaaS offering cover:

  • Web-based user interface
  • Services to develop, test, deploy, host and maintain applications
  • Multi-tenant architecture
  • Scalability, load balancing and failover

How does PaaS work?

Creating Software Applications:

Developers utilize the PaaS technology right from the conception of the applications to application development, testing and deployment.

Range Of Features:

Users can select from a wide range of features, they have the power to work with the features that they actually need and discard the others. Therefore, users can select a service that suits their requirements perfectly.

Automated Upgrades:

PaaS services are upgraded on a regular basis, the existing features are upgraded and improved and new ones are added.

Pay Per Use:

Users generally have to pay for PaaS on a subscription basis and they only pay for the actual use. Distribution of the underlying resources results in affordability. Also, this model enables the individuals and organizations to make use of the sophisticated development software, business intelligence tools and analytics tools that are highly-priced.

Management And Support:

The complete PaaS infrastructure and applications are managed and support service is available for everything.

Examples of PaaS

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<th class=”tg-1d78″><span style=”font-weight:bold;color:rgb(0, 0, 0)”>Artificial Intelligence</span></th>

<th class=”tg-1d78″><span style=”font-weight:bold;color:rgb(0, 0, 0)”>Machine Learning</span></th>



<td class=”tg-0pky”>Artificial intelligence is a technology <br>which enables a machine to simulate human behavior.</td>

<td class=”tg-0pky”>The goal of ML is to allow <br>machines to learn from data so <br>that they can give accurate output.</td>



<td class=”tg-0pky”>In AI, we make intelligent systems<br>to perform any task like a human.</td>

<td class=”tg-0pky”>In ML, we teach machines with <br>data to perform a particular task and <br>give an accurate result.</td>



<td class=”tg-0pky”>AI has a wide range of scope.</td>

<td class=”tg-0pky”>Machine Learning has limited scope.</td>



<td class=”tg-0pky”>It includes learning, reasoning &amp; self-correction.</td>

<td class=”tg-0pky”>It includes learning and self-correction <br>when introduced with new data.</td>



<td class=”tg-0pky”>AI completely deals with structured, <br>semi-structured and unstructured data.</td>

<td class=”tg-0pky”>ML deals with structured and semi-structured data.</td>



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What is IaaS?

Infrastructure as a service (IaaS) is a business service model and a method of delivering computing, storage, networking and other capabilities via the Internet. IaaS enables companies to utilize web-based operating systems, applications and storage without having to purchase, manage and support the underlying cloud infrastructure. The most popular examples of IaaS platforms include Amazon Web Services (AWS) and Microsoft® Azure®.

Typically, IaaS provides hardware, storage, servers and data centre space or network components; it may also include software.

An IaaS provider provides policy-based services and is responsible for housing, operating and maintaining the infrastructure equipment it provides for a client. Clients usually pay on a per-use or utility computing basis.

How does IaaS work?

This part shows the architecture of Infrastructure as a Service.

i. Service Provider Cloud

The client gives access to the virtualized environment which can also call as an infrastructure served over the internet. They are given such components to build their own IT platforms. The Cloud is flexible as the user can access IaaS anytime and from anywhere. The only requirement is an internet connection.

ii. Hardware

The place where the data is stored which can be also known as the infrastructure or hardware. It is made reliable and secure where the data stores. It includes many offerings such as virtual server space, network connections, bandwidth, IP addresses, and load balancers.

iii. Servers

The servers are maintained by the Cloud providers and totally managed by them. These servers and networks distributed across numerous data centres. These data centres are secured by cloud providers.

Examples of IaaS

Let’s see an example of Infrastructure as a Service:

i. Business Networks

In a business network, a pooled server and networking resources which use a business will store information and run applications. Increasing businesses will scale their infrastructure in accordance with growth.

ii. Cloud Hosting

In cloud hosting the internet sites host on virtual servers that support upon pool resources from underlying physical servers

iii. Virtual Data Center

There is a virtualized network of connected servers which will improve cloud hosting capabilities, enterprise IT infrastructure or integrate operations.


So, this was all about Infrastructure as a Service (IaaS), PaaS platform as a service and SaaS software as a service tutorial.The increasing popularity of IaaS, PaaS, and SaaS is reducing the need for on-premise hosting. Each of these cloud computing server models give users choice, flexibility, and options that on-premise hosting simply cannot provide. Hope you liked our explanation in this entire post.

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