Comparing SaaS, PaaS, and IaaS

In the past, it was expensive to set up your own web server. There are lots of considerations, including network connectivity, storage, server configuration, and OS setup. Nowadays, cloud computing services are here to provide all the infrastructure services, which lowers costs significantly, especially for individual developers and small- and medium-sized companies. There are three main categories of cloud computing services out there. These are Software as a Service (SaaS), Platform as a Service (PaaS), and Infrastructure as a Service (IaaS). There are pros and cons for each, and these will be discussed in this section.

IaaS: Users do not need to purchase their own servers, software, network devices, and so on. These infrastructures are provided as a service, and users do not need to care about setup and maintenance. They still have the ability to configure these services, such as installing software and setting up firewall. Example of IaaS include...