Mentoring is a key tool for guidance and knowledge transfer. However, when it relies solely on an informal relationship, it may lack effectiveness: unclear objectives, irregular exchanges, and limited impact. Structuring a mentoring program helps optimize the experience for both mentors and mentees by providing a clear framework, effective follow-up, and tangible results. How can spontaneous mentoring be professionalized? Discover the key steps to building a sustainable and impactful mentoring program.