What technology allows physical servers to host multiple virtual servers?

Virtualization is the technology that allows physical servers to host multiple virtual servers, effectively enabling one physical machine to run multiple operating systems and applications simultaneously. This is achieved through a hypervisor, which creates and manages virtual machines (VMs). Each virtual server operates independently and has its own resources such as CPU, memory, and storage, although they share the underlying physical hardware.

This approach optimizes resource utilization, increases flexibility, and simplifies management by enabling workloads to be migrated between virtual servers without downtime. Additionally, virtualization facilitates the scaling of resources as needed and supports the development of efficient IT infrastructures, such as those found in cloud environments.

While cloud computing relies on virtualization for its functionality, it encompasses a broader range of services beyond just the hosting of virtual servers. Network segmentation is focused on dividing a network into smaller segments for security and performance, while data encryption is concerned with securing data by encoding it. Neither of these concepts directly enables the hosting of multiple virtual servers on a single physical server like virtualization does.