This is a submission for DEV Computer Science Challenge v24.06.12: One Byte Explainer.

Explainer

Virtualization is a technique where a system is run in a virtual environment, as in not run by actual hardware or by its usual host system. The virtual system is designed to be indistinguishble from the real setup by anything running on it.

Additional Context

Many success cases of virtualization are very well-known such as cloud computing, containerization and emulation; some of the lesser known as being examples of virtualization are distributed file systems and work over remote desktops.