This interactive course begins with the fundamentals: understanding diversity; self-knowledge and cognitive biases; How we understand the world and what we mean by culture as well as the main trends and the 9 dimensions in intercultural management. The second section is based on sharing experience on diversity strategies and management of a company established all over the world. As the commitment to cultural diversity (Internationalization and Feminization) needed a global tool (HRIS) an interesting systemic complexity emerges. The brief review of the evolution of Human Resources Management in a multicultural company (1990-2020) requires permanent adaptation, a sine qua non condition for diversity management. The course explores different areas of application of intercultural management in business: expatriation, training, recruitment, remuneration and international talent development. It also deals with the daily management of diversity: management of a virtual or semi-virtual team, leading remote intercultural meetings, new posture of the “manager-coach” and the performance review in a diverse environment. After a focus on HR and artificial intelligence used in diversity management, a case study is foreseen on the management of the impacts of religious facts in the professional environment. Finally, we go through the importance of a powerful internal communication to involve all stakeholders in the challenges of diversity management. The course ends up with some general recommendations for successful intercultural management.