CompTIA Cloud+ Practice Test 2025 - Free CompTIA Cloud+ Practice Questions and Study Guide

The least likely component to be part of the IaaS (Infrastructure as a Service) provider's responsibilities is email servers. This is because IaaS primarily focuses on providing virtualized hardware resources, such as virtual machines, storage, and networking capabilities, rather than application-level services or software, like email servers.

Email servers are typically categorized as Software as a Service (SaaS) or may even be provided under specific managed service offerings. IaaS providers typically leave software applications, including email services, to users or third-party vendors to set up, manage, and maintain.

In contrast, hypervisors, load balancers, and routers are all crucial components of the infrastructure that IaaS providers manage. Hypervisors facilitate the virtualization of servers, load balancers distribute traffic across multiple servers to ensure stability and performance, and routers manage the flow of data between different parts of the network. These elements are essential for delivering the foundational infrastructure services that are characteristic of IaaS.