Which service model includes offerings such as SaaS, PaaS, and IaaS?

The correct answer is cloud computing because this service model encompasses a range of offerings designed to provide various levels of IT resources and services over the internet. Software as a Service (SaaS), Platform as a Service (PaaS), and Infrastructure as a Service (IaaS) are all specific types of cloud services that cater to different needs.

SaaS delivers software applications over the internet, eliminating the need for local installation and maintenance. PaaS provides a platform allowing developers to build, deploy, and manage applications without the complexity of maintaining the underlying infrastructure. IaaS offers virtualized computing resources over the internet, allowing users to rent server space and network infrastructure.

Together, these models enable organizations to leverage scalable resources, enhance flexibility, reduce costs, and focus more on their core business rather than IT management. This multifunctional nature and the reliance on internet resources make cloud computing the comprehensive model that includes SaaS, PaaS, and IaaS.