From the consumer (end users) point of view, it does not matter how long we are going to define/discuss about the big data using the brain power of world’s most powerful data scientists. Scientists are talking about it and business people want to make money out of it.
What really matters is how can I use it (big data) today, with out much fuss.
So companies are working on the following principles.
Decision making tool that has a back end engine which
Integrates (data from disparate sources, considering variety), that works
Fast (considering volumes of data)
Easier to work with, and help leverage
A system that could be called DIFEN. Here is a one minute video from IBM. http://ibm.co/1vHlMGA