The research focuses on internal communication in public organizations, with the Autonomous Decentralized Municipal Government of Canton Salinas as the object of study. Internal communication management was examined with a comparative analysis before and after the Covid-19 pandemic. This study is framed within a descriptive and correlational approach, using tools such as surveys to the institution's collaborators, interviews to the highest authority, to the director of the communication area and to professionals with experience in the subject. The analyses carried out evaluated different aspects, such as the impact on functions performed, measures adopted, difficulties during the pandemic, and actions implemented both before and after the pandemic. Consequently, the research proposes the MGCSPR 2023 model, an acronym that corresponds to the Sustainable Communication Management Model by Results, developed in 2023. This model seeks to strengthen the public management of the entity through strategies focused on key areas such as human talent management, organizational management, citizen participation, and supervision and control.