How does hardware virtualization work and what is its purpose? How and why can it be used?

Question

Virtualization

For example, on my laptop in the BIOS, you can enable virtualization mode, why is it? How can it be used? For example, I have one operating system installed on this laptop. If the virtualization mode is enabled, what options do I have in this OS, how can I use this mode when programming? Maybe there is an API? What restrictions do I get if disabled? Please explain how hardware virtualization works

Answer 1

I think it’s impossible to explain here in a nutshell, it’s better to look at this article for example:
habrahabr.ru/company/intel/blog/196444