Which component is not typically used in a cloud-based Infrastructure as a Service (IaaS) solution?

In a cloud-based Infrastructure as a Service (IaaS) solution, the primary focus is on providing foundational resources such as computing power, storage, and networking capabilities. IaaS typically allows users to deploy and manage virtual machines, access various networking resources, and utilize flexible storage systems.

Software applications, on the other hand, fall under the category of Software as a Service (SaaS). SaaS solutions deliver fully functional applications to users over the internet. In this context, while users can run software applications on the virtual machines provided by IaaS, the applications themselves are not part of the IaaS offering. Thus, software applications are not generally included in the core components of an IaaS architecture, making them the correct choice for this question.