ABSTRACT:Current transitions, such as digital and ecological ones, bring new challenges for organizations, characterized as unknowns. Addressing them requires new management paradigms for which design-based methods show promise. Yet their organizational implementation remains limited, what this paper investigates. Based on a two-year collaboration with a French healthcare company, the study involved developing, delivering and evaluating a four-day training program. Based on interviews and evaluations from 65 participants, results indicate high satisfaction, significant habit disruption and intent to adopt design-based tools. Due to the development of a common language in the organization and the emphasis on learnings’ co-creation, this training had a transformative power. Thus, highlighting its practical value and opening pathways for exploring its long-term impact on organizational practices.