[i-con]

I'm confused, is it bare metal or is it an EFI application? (bare metal used to mean that something can run without services, like those that UEFI provides)

[danudey]

I think what it means is:

1. It's an EFI application

2. It doesn't require any external runtimes, any setup, etc. (i.e. your UEFI system can boot straight into it without anything in between).

At least, that seems to be the case.