Virtualization is a technology that allows one computer to act like multiple computers. It does this by creating virtual versions of hardware, such as servers or storage devices, which can run different operating systems and applications simultaneously. This means that businesses can save money and resources by using fewer physical machines while still maximizing their computing power. By using virtualization, companies can easily manage their IT resources, improve efficiency, and enhance security. For example, a single physical server can host several virtual servers, each running its own operating system and software applications. This flexibility helps organizations adapt to changing needs without the hassle of purchasing new hardware.