Okay, so every name in this post makes sense it's just some of these words started to mean very different things with time.

This is not a hypervisor or a vm manager. It's a library that lets you run a C or Rust function[1] inside a VM managed by platform hypervisor[2].

[1]: As in Function (computer programming) not a AWS Lambda.

[2]: KVM or mshv on Linux and Windows Hypervisor on linux