Since 2008 Belgium has been developing a more integrated care system. Today, the Belgian healthcare system is undergoing significant reform at national and sub-national levels. In primary care, at the federal level, the New Deal for general practice aims to improve the organisation of general practice and a new inter-federal plan for integrated care is currently under development. At the regional level, there are many initiatives. In Wallonia several projects are working towards greater inter-professional collaboration and clear territorial delimitations in order to cater for the needs of local populations in a more integrated fashion. The project Proxisanté has been exploring the needs of professionals and patients by conducting consultations and workshops with actors within primary care to feed into a decree which will be presented at the end of 2022. Based on the outcome of this process, actions will be undertaken, starting in 2023, to implement this vision and develop a territorial network of local health systems. Our team is responsible for following and supporting this process of implementation by developing a transdisciplinary and innovative bottom-up methodological approach. For this we intend to rely, among other things, on the Integrated People-Centred Health Systems (IPCHS) Standard developed by the Health Standards Organisation (HSO), as well as the various tools created to facilitate the implementation of this standard. The presentation will describe the preliminary work done to prepare for concrete support for the creation of local networks starting in 2023. Specifically, we will detail the methodology used to identify the priorities that need to be focused on to ensure successful implementation, Finally, we will present the key messages from meetings with different existing subsystems concerning their strengths and weaknesses, and the inspiring practices identified that will allow us to build a regional learning system dynamic.