The magnitude and the growth rate of data that we daily produce have increased massively. This data “proliferation” is generated mostly by three sources: machines, companies and humans. According to Digital Universe study, by 2020 around 5.000 of gigabytes will be produced for every individual on the earth, more or less equal to 40 zettabytes. These “numbers” say nothing to most, but put such figures in perspective 40 trillion gigabytes are estimated to be 57 times the amount of all the grains of sand on all the beaches on earth.