Information Technology (IT) is rather young in human history. If you compare this sector with industry, IT is just at the beginning of its development. To illustrate this infancy, let’s consider the evolution of IT jobs. With the multiplication of tasks and jobs left to IT, teams grew in number but also in complexity. New fields of expertise emerged to cover these growing needs. Nowadays, a Fortune 500 company has hundreds of software products running on its infrastructure. More and more data are collected, processed, stored, combined, analyzed, distributed… The amount has grown by a factor of 10 in only 6 years.