Which best describes the function of IaaS, PaaS, and SaaS?

The correct answer highlights the distinct roles of Infrastructure as a Service (IaaS), Platform as a Service (PaaS), and Software as a Service (SaaS) in cloud computing.

IaaS provides the foundational resources for cloud computing, such as networks, servers, storage, and virtual infrastructure. This allows users to rent the underlying hardware and manage their own applications and operating systems, giving them a high level of control over their infrastructure.

PaaS, on the other hand, is designed to facilitate application development by providing a platform that includes operating systems, programming languages, and necessary tools. This enables developers to build, test, and deploy applications without the complexity of managing the underlying hardware and software infrastructure.

SaaS delivers complete software applications over the internet, freeing users from the need to install, manage, or maintain those applications on their local devices or servers. This model is particularly user-friendly, as the service provider handles everything, from maintenance to updates.

Understanding these distinctions reveals how each service model caters to different needs based on the level of management and control the user requires over their computing resources. This clarity in their functions justifies why the first option accurately describes IaaS, PaaS, and SaaS.