The health crisis has played a revealing role by accelerating the processes of transformation of the activity and the production apparatus which, for some, had already been at work for many years. The sectors of activity that meet essential needs, which often cannot be relocated, are set to evolve significantly. In this context, the issue of adapting skills has gained further places in the hierarchy of priorities. 

Certain activities, on the decline, see their labor requirements significantly decrease, while others, in development or still to be structured, are more and more in search of qualified personnel, therefore trained. However, from the measurement taken of the scale of the impact of the crisis on the economic fabric in the short and in the long term, public authorities, professional branches and companies, have noted a gap in the training tools available to support this background movement. There are many systems that exist today, in particular some recent ones such as retraining or promotion through work-study programs (Pro-A). But few are those which allow inter-sector professional mobility.