DDU stands for Dreamworks Dedicated Unit. They've rented part of another established company in India (Technicolor) and using its facilities to get DWA specific work done. This unit is pretty much separated from Technicolor (office hours, in office policies, atmosphere, etc). But big picture policies still apply (harassment, etc).
From what's been told, the DDU was Dreamworks' attempt at creating a separate studio in India. It would gradually take on more and more work - starting with shots in DVD specials, going up to shots in feature films, then whole sequences in feature films and finally doing feature films of their own (which is, the penguins of madagascar - the movie). As this progressed, they would take more and more ownership of the unit from Technicolor until it was owned completely by DWA.
Personally, I can't complain about the DDU. Standards have just gone up every few months (in terms of infrastructure, work done, etc).