Illustration of a computer cloud

Understanding different cloud models (SaaS, PaaS, and IaaS)

While most people are familiar with Cloud computing, there is still some confusion over different cloud service offerings – SaaS, PaaS, and IaaS. Below is a quick summary of each model and how they are different and similar in many ways. 

Software as a Service (SaaS)

SaaS delivers software over the Internet. Therefore, you do not need to buy, install, maintain or update the software yourself.

Platform as a Service (PaaS)

PaaS is a deployment environment in the Cloud, allowing customers to develop applications and services over the internet.

  • Typical User: Aimed at Software Development Teams
  • Management: Customers manage the applications and services they develop, and PaaS providers typically manage everything else
  • Some examplesAmazon Web ServicesAzureHerokuVenda

Infrastructure as a Service (IaaS)

IaaS provides virtualized computing resources over the Internet. In other words, they provide access to computing resources such as processing power, data storage, and networking.

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