KVM, or Kernel-based Virtual Machine, is a technology that allows a computer to run multiple operating systems simultaneously. It turns the Linux kernel into a hypervisor, which means it can manage virtual machines (VMs) efficiently. Each VM operates like a separate computer, complete with its own operating system and applications, all running on the same physical hardware. This technology is widely used in data centers and cloud computing because it maximizes resource utilization and flexibility. With KVM, users can easily create, manage, and scale VMs, making it a popular choice for businesses looking to optimize their IT infrastructure while reducing costs.