Cloud Computing
Cloud Computing

The Different Cloud Types: IaaS, SaaS, & PaaS (Part 3)

Hello again and welcome to Part 3 of this blog post series. If you have read Part 1 and Part 2, you are probably much smarter than most of your friends who cannot name all four cloud types. Just kidding. They should know too as you should have shared or blog with them. In any case, here is another way to classify cloud types based on the service they provide.


Hello again and welcome to Part 3 of this blog post series. If you have read Part 1 and Part 2, you are probably much smarter than most of your friends who cannot name all four cloud types. Just kidding. They should know too as you should have shared or blog with them. In any case, here is another way to classify cloud types based on the service they provide.

There are basically three main categories for cloud computing services. These are Infrastructure-as-a-Service (IaaS), Software-as-a-Service (SaaS), and Platform-as-a-Service (PaaS). Let’s take a look at them each of them.

Infrastructure-as-a-Service

Infrastructure-as-a-Service (IaaS) is probably the easiest to understand. It is the kind that offers virtual servers and data storage disks. That means that the cloud service provider is offering off-site infrastructures for virtual or dedicated hardware. These organizations remotely access, manage, update, and monitor all the software applications and the data stored. Examples would be Rackspace and Amazon Web Services.

Software-as-a-Service

Software-as-a-Service (SaaS) is by far the is the type of cloud service that has the biggest market and the fastest growth. The service allows organizations and users to access different software applications on the web on a very affordable and scalable pay-per-use basis, instead of developing their own or buying licenses for different programs. Salesforce.com is the pioneer and the perfect example of SaaS.

Platform-as-a-Service

Platform-as-a-Service (PaaS) is the third type of cloud service type offers a development platform for users. This allows users to create, develop and customize operating systems, software applications, database, and web servers for their own use. Some examples include Google App Engine, Microsoft’s Windows Azure, and Force.com.

Those are the three major cloud types in terms of the kinds and level of services offered by cloud computing companies. There are more detailed types that have evolved. But let’s reserve that for the next post. Keep on learning!

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