Jun 4, 2020

Key Differences Between IaaS, SaaS and PaaS

Cloud technology has become exponentially more important for businesses over time. With a myriad of applications working on different cloud models, and some work requires to be done to examine whether these solutions are the best fit to meet a business's requirements effectively and efficiently.

Cloud models comes in three types:

  • Infrastructure as a Service (IaaS)
  • Software as a Service (SaaS)
  • Platform as a Service (PaaS)

The major differences between IaaS, SaaS, and PaaS essentially boil down to how much of the stack you manage relevant to the service provider. Depending on your requirement for flexibility and customization.

What is IaaS?

Infrastructure as a Service (IaaS) provides users with hardware to perform several tasks. This could mean storage space, computing time with advanced or specific processors, and virtualization services. IaaS is utilized by those who need to ease the requirement to maintain their own on-premise data centers.

Cloud Models IaaS
  • Minimize Costs: Deploying an IaaS cloud model eliminates the necessity to deploy on-premise hardware that decreases the prices.
  • Enhanced Scalability: Because the most flexible cloud computing model, It allows you to scale the computing resources up or down supported on demand.
  • Simple Deployment: IaaS allows you to efficiently deploy the servers, processing, storage, and networking to create it up and working in no time.
Example of IaaS
  • Amazon Web Services (AWS)
  • Google Compute Engine
  • Microsoft Azure

What is SaaS?

Software as a service (SaaS) is when a provider hosts an application and makes it possible to subscribers over the internet. Some SaaS products allow the user to download the application, but need an internet connection to verify their subscription for it to operate. We are not counting those in our comparison of cloud services. SaaS ensures that customers are regularly up to date with the latest version, while also assuring that developers have a continuing source of revenue with which to maintain their product.

  • Affordable: SaaS is affordable because it eliminates the costs involved within the purchase, installation, maintenance, and upgrades of computing hardware.
  • Anywhere Accessibility: With SaaS, you'll access the services from anywhere using any device such as smartphones. Which eliminates the constraints set by on-premise software.
  • Ready to Use: you'll quickly found out SaaS services so they become functional in no time. All it takes is that you simply sign up for the service to get access to fast and powerful computing resources.
Examples of SaaS
  • Hubspot
  • GSuite
  • Zoom

What is PaaS?

Platform as a service (PaaS) provides developers with a perfect environment for development and deployment over the internet. With PaaS, developers can build everything from simple apps to complex cloud-based business software. Comparable to SaaS, it allow users to access powerful tools that they may not otherwise be able to afford or maintain.

  • Minimal Development Time: PaaS reduces the development time since the supplier provides all computing resources like server-side components, which simplifies the tactic and increases the focus of the development team.
  • Multiple Programming Language Support: PaaS provides support for multiple programming languages. Which a software development company can utilize to develop applications for various projects.
  • Enhanced Collaboration: With PaaS, your business can profit from having become a collaboration. Which will help integrate your team dispersed across different locations.
Examples of PaaS
  • Windows Azure 
  • Google App Engine
  • Openshift

Which Cloud Model is Best for Your Business?

Now that you have an idea of the service level provided by each of the cloud service models. You can start to decide which model is best for your business requirements. Some large companies rely on SaaS services because even the largest companies can't do everything.


Although the services are related in many ways, SaaS, PaaS, and IaaS all provide many levels of concept that remove work from the user. As with most things, deciding the best is finding the perfect balance between giving up control, and saving your time and effort.