the process of changing something that exists in a real form into a virtual version (= one that is created using a computer)

He had published an article on the virtualization of everyday life. 他曾发表过一篇关于日常生活虚拟化的文章。

the process of creating a virtual version or several virtual versions of a piece of computer equipment or software

server, desktop, and network virtualization 服务器、桌面和网络虚拟化

Rather than having dozens of servers operating at less than their maximum level of utilization, data centers can use virtualization to consolidate those same machines' functions on just a few computers. 数据中心可以利用虚拟化将这些相同机器的功能整合到少数几台电脑上，而不是让几十台服务器以低于其最高利用率的方式运行。