No idea ?? The trainer who was fronting the course, mentioned that BT were one of four large corps asked, or chosen, to trial Win 8.
I'm a complete novice with OS's, but I can say that it is a ???helluva lot quicker than the previous one. One reason being we receive the lappy with just the very basics on it. We then individually request the relevant software needed for our jobs. Previously, all lappy's had the full software for all engineering/planning loaded on it, most of which wasn't used and really slowed the thing down.
Also, any upgrades, of which there seem to be plenty on a weekly basis, can be done via 'Apps', rather than the old method of having to write new scripts and deliver them over (I've forgotten its name already ??) the slowest system known to man !!
All I know is, its quicker and we have 'Tiles' instead of 'Windows'.