“…The first article of this supplement 1 ) presents the challenges for implementing the PlanificaSUS, which was created by the Proadi-SUS project “ A Organização da Atenção Ambulatorial Especializada em Rede com a Atenção Primária à Saúde ,” implemented by the Hospital Israelita Albert Einstein, based on an innovative model, proposed and widely tested by the Brazilian National Council of Health Secretaries (CONASS – Conselho Nacional de Secretários de Saúde ) over the last decade. The authors found that, despite advances, such as in the case of better articulation of networks and lines of care, important barriers persist, such as those related to the difficulty of regional planning articulated with specialized care.…”