Virtualization is the process of creating a virtual version of a computer system or resource, such as a server, storage device, network, or operating system. This technology allows multiple virtual instances or environments to run on a single physical machine, effectively maximizing resource utilization and reducing costs. Virtualization enables IT professionals to create, deploy, manage, and move virtual machines quickly and easily, providing greater flexibility, scalability, and efficiency in data centers and cloud environments. It has become a key component in modern IT infrastructure and is widely used in businesses of all sizes to improve performance, security, and manageability.