Consulting missions are an opportunity for companies to benefit from the skills and experience of a team of consultants in order to provide solutions to the problems and issues they face in developing their business. It brings a real added value to firms thanks to the methodological approach and the tools used by the consultants. The evaluation of the consulting missions is appreciated at several levels, in particular at the level of the profitability of the investment compared to the cost of the mission, at the level of the development of the competences of the personnel, at the level of the implementation of the action plans resulting from the recommendations of the consultants, at the level of the improvement of the processes.