Frequently Asked Questions
IaaS is like renting IT infrastructure, PaaS is a ready-made environment for developers to build applications, and SaaS is software you use directly over the internet without worrying about setup or maintenance.
None is universally better—it depends on the use case. IaaS is best if you want control over infrastructure, PaaS suits developers building apps, and SaaS works well for businesses that need ready-to-use software.
Companies use them to save time, reduce infrastructure costs, scale resources easily, and improve collaboration by accessing services from anywhere with an internet connection.
- IaaS: AWS, Google Compute Engine, Microsoft Azure
- PaaS: Heroku, Google App Engine, AWS Elastic Beanstalk
- SaaS: Zoom, Salesforce, Microsoft 365
SaaS usually offers the lowest upfront cost since you just subscribe and use the software. IaaS and PaaS can vary based on how much infrastructure or development resources you consume.
