Cloud Computing: The difference between IAAS, PAAS and SAAS

Cloud computing has been trending for past couple of years. However, recently people have been constantly talking about it. You might wonder what it is, how it works and who provides it or does it. Before jumping to the difference between IAAS, PAAS and SAAS, let’s look at some major terminologies in cloud.

Cloud Computing - difference between IAAS, PAAS and SAAS

Cloud computing has nothing to do with the clouds in the sky. We can think of it like something that is stored or accessed without actually owning the hardware. Also it includes storing, accessing & deploying your data on the internet without having to deal with the hardware requirements. Cloud provides all the necessary tools and hardware to you on your screen. These services could be storage, database, networking and even computation. Cloud provides you flexible options to pay as you go or use and for only the services that you use.

Types of Cloud Computing Models

Since the definition is pretty clear, let’s understand the types of cloud services. To clearly get the meaning of types of cloud, we need to understand that there are two factors that drive their meaning. They are responsibility – things we manage, and things that others do. From that perspective, we choose from the three models of clouds. Let us take a look at the difference between IAAS, PAAS and SAAS.

  1. Infrastructure-as-a-service (IaaS)
    This is the most basic model and it provides the most management to client side. The client has to manage their virtual machines and keep them updated. They also need to manage the data as well as the services they need. IaaS provides you full control over your compute resources.
  2. Platform-as-a-service (PaaS)
    The second type takes the management of the operating system on the virtual machines out of the equation. The middleware and the runtime are also handled by the cloud provider. All you have to do is manage your applications and data. This works as a framework where you can build your applications or customize it.
  3. Software-as-a-service (SaaS)
    This model gives you the least management load. All the major management is done by the cloud provider. It significantly reduces the stress of keeping everything up to date and is the most preferred option for big projects. You can focus on the functionality of your project as all the infrastructure maintenance is handled by the cloud provider. It usually is hosted on a remote server which is accessible over the internet.

Difference between IAAS, PAAS and SAAS – Tabular Format

FunctionalityIaaSPaaSSaaS
Data  X
Application  X
Operating System XX
Middleware XX
VirtualizationXXX
ServersXXX
StorageXXX
NetworkingXXX
(Table showing things that you don’t have to handle in the different services)

Till now we have seen how cloud can make our lives pretty easy by giving various options to choose from. We have just scratched the surface here and there are many more amazing things left to discover about it. 

Before wrapping up, I just want to share a list of major cloud providers from which you can choose from:

  1. Amazon Web Services(AWS)
  2. Microsoft Azure
  3. Google Cloud
  4. Salesforce
  5. IBM Cloud
  6. Oracle Cloud

There are many more so before choosing by popularity make sure to check their differences in detail. Also check out the top tech skills in demand for 2021. Stay tuned to check out about the biggest cloud providers in our next blog.

Thanks for reading! Let us know what you liked or disliked about our content in the comments below.

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