Final answer:
The IaaS cloud service model allows consumers to provision, deploy, and run their applications, offering full control over the virtual machines and underlying resources.
Step-by-step explanation:
In the context of cloud computing, the consumer has the ability to provision, deploy, and run their applications in the Infrastructure as a Service (IaaS) model. In IaaS, the cloud provider supplies the fundamental compute, storage, and networking resources, granting the consumer full control over the virtual machines, including the choice of the operating system. Other services like Platform as a Service (PaaS) provide a platform allowing customers to develop, run, and manage applications without the complexity of building and maintaining the infrastructure typically associated with developing and launching an app. However, PaaS does not usually allow the same level of control over the hardware resources as IaaS does. Meanwhile, Software as a Service (SaaS) delivers ready-to-use applications over the internet, but users cannot manage or control the underlying infrastructure. Finally, Container as a Service (CaaS) is a cloud service model that delivers container orchestration tools and is generally considered a subset of IaaS, though it is more specialized towards containerized applications.