This paper describes the first stages on the development of a design method of digital trainings using the collaborative authoring tool "ALO". Based on the theory of instrumental conflict (Marquet, 2005), this method highlights the necessity of the design digital trainings under the optimal harmonization for users/learners in didactic, pedagogical and technical terms. By the implementation of an artificial intelligence, we will collect the data acquired from users' experiences to analyse their performances. The result of this analysis will be given to the trainer/designer in order to improve future trainings by predictive learning models increasing cognitive skills and the measurement of the efficiency of a digital training. [For the complete proceedings, see ED601080.]