Office Pro - thing I've always wondered

[rustikles]

So, in my job, we use a Office 2010 Pro bootstrapper for system wide machines. It never asks me to input a product key during this installation and it always made me wonder:

Has this setup just been configured with the product key included so that it doesnt require a manual input or is it something else?

 

[ex_bubblehead]

Likely an enterprise version using a KMS to activate.

 

[rustikles]

Best answer selected by rustikles.