Exploring the Practical Applications and Impact of VPS and KVM Virtualization Technologies in Modern Cloud Computing

VPS（Virtual Private Server）

VPS stands for Virtual Private Server, which refers to a type of hosting service where a physical server is partitioned into multiple virtual servers that function independently. Each VPS operates like a standalone server with its own operating system, disk space, bandwidth, CPU resources, and memory allocation. Users can perform tasks such as restarting their VPS, installing software, and managing permissions autonomously.

KVM (Kernel-based Virtual Machine)

KVM is an abbreviation for Kernel-based Virtual Machine, representing an open-source kernel-level virtualization technology that allows the Linux kernel to act as a hypervisor. KVM transforms Linux into a full-fledged virtualization platform, enabling direct conversion of hardware resources into multiple virtual server environments. With KVM, each virtual machine has its own private virtualized hardware, including CPUs, memory, hard disks, and network devices, providing near-native performance and strong isolation among virtual machines.

In the context of VPS, KVM serves as a virtualization technology that offers enhanced performance and stronger isolation. It enables users to run a variety of different operating systems as virtual machine instances. Because KVM leverages hardware virtualization support directly at the hardware level, it is often considered to provide a virtualization solution that closely approximates the performance of dedicated servers.