Cloud is where all of us reside literally/virtually and eventually. Most of our data including our private and public moments are part of cloud dropbox,mails,facebook,evernote. We no longer need to buy boxes or even think of the mamoth task of where all of this data get stored. On a personal front the challenges are far less complicated pushing data to the cloud. On an organisation/ enterprise level we need to have the following queries addressed before even thinking of the cloud. Of course we need to plan for the rainy day lest the cloud eats up competition.