Much of what is driving the astounding sale of the iPad is the "bigger" picture. What would that be? Movement to a mobile environment (operate anytime, anywhere is becoming expected), cloud computing, consumerization of IT, and Big Data are all playing a part - due to the iPad's ability to leverage these capabilities or improve the processes around one of these factors.
Do you find that you hear these terms - "mobility, cloud computing, Consumerization of IT, and Big Data" a lot? - and don't really grasp what all that means? Start reading this resource and it will start to make sense. Change is rapid, and it's speed will only increase!