Virtualization allows multiple operating systems and applications to run on a single piece of hardware using virtual machines. Technologies such as VMware, Hyper-V, and KVM create virtual environments that optimize server usage, reduce costs, and facilitate the management of technological resources. It is key to consolidating infrastructure, improving disaster recovery, and increasing flexibility in business environments. By reducing reliance on physical hardware, virtualization helps scale operations efficiently, allowing companies to manage servers, desktops, and networks more easily and with less investment in physical infrastructure.