In the days past when I worked for the IT support section of DSTO, this mystical program called "TARDIS" popped up from time to time.

They didn't tend to talk to the IT department (or at least not the part that I worked for), so it was always a bit amorphous and no-one seemed to know what it actually did.

Well, Graham Durant-Law has a number of informative PowerPoint presentations (particularly this one) and it explains the process in more detail. Knowing what I do about the complexity of Defence bureaucracy, it's quite an achievement and well worth a read.