Based on services offered

This is a very well-known piece of the cloud. Based on the services that a cloud offers, it could be divided into the following:

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

While I am sure that we are familiar with these demographics of the cloud, let us take a look at the differences: 

As we move from the on-premises model to IaaS, PaaS, and SaaS, the ability to customize the software decreases and standardization increases. This has led to a lot of independent software vendors (ISVs) re-writing their applications in a multi-tenanted model, and providing it to the customers in an as a service model. 

When developing bespoke applications, organizations are choosing PaaS and IaaS instead of the traditional model, which is helping them increase agility and reduce the time to market. 

Some examples of this cut of data is as follows: 

Yes, you read that right. AWS, Azure, and GCP all have IaaS and PaaS services (and arguably some SaaS services also, but more on that later).