Could someone kindly explain what kind of room for growth this...

Could someone kindly explain what kind of room for growth this company still has? I mean in terms of infrastructure capacity, not share price. I would think that 3 data centres in each Melbourne and Sydney as well as 2 in each Brisbane and Perth would be ample storage for the moment and thus we would see a slow down in growth. I've seen MWatts used to describe capacity of specific data centres, could someone explain to me how this relates to data being stored and storage capacity and subsequently how they may be using this as a metric to know when to open a new data centre? Thanks!