If you have a virtual box
you don't care about the code underneath.
The vitual box is to get away form code dependency.
Or, do you want visualization? That means running a application inside a shell that protects it from hardware failure and/or allows the server management do load balance without closing the application or losing data.
The Virtual Box is often identified with Sun Micro systems. The Virtual Box on their systems is when a user wants to run a windows application inside of the Sm UNIX, Linux, whatever OS.