[amelius]

Can someone explain what VM they are talking about, and where that VM is running on, and what is running in it?

[dbrueck]

It's a custom VM running inside their app, though calling it a VM might be a bit of a stretch because it doesn't appear to be a general purpose computing mechanism but more of higher level command processor.

It sounds like the forthcoming part 2 article will go into more depth.

[hendrik127]

This seems to refer to a language virtual machine rather than an actual VM. Like the Java Virtual Machine (JVM)