In PR4, leadership was assumed to oversee the co-creation of the online course and the integration of training materials into the CACAO platform. The efforts were comprehensive and encompassed tasks such as finalizing the platform design and delivering training to project partners and teachers. A key component of this training included organizing the 4th LTT, which focused on “Hands-on training for communication and video recording” on the CACAO platform and Moodle. Furthermore, contributions were made to CACAO online training through the provision of instructional videos for platform usage. This collaborative effort in PR4 strengthened the consortium’s ability to effectively implement the CACAO curriculum and enhance the educational experiences of pre-primary teachers. The technical development of the platform successfully aligned with curriculum objectives, while the educational platform training equipped teachers with the necessary skills to create and utilize digital resources effectively.