This article provides a description of the implementation of diplomatic education and training cooperation between Indonesia and Ecuador through the Indonesia–NAM Senior Diplomatic Online Training program in 2021. It focuses on how a previously stagnant Memorandum of Understanding (MoU) was reactivated and operationalized within the framework of South–South Cooperation (SSC). Using a qualitative descriptive approach, this research draws on document analysis, literature review, and in-depth interviews to explore institutional processes, program design, and adaptive strategies. The findings show that the Center for Diplomatic Education and Training (Pusdiklat) of the Indonesian Ministry of Foreign Affairs played a pivotal role in translating formal agreements into practical implementation. The program demonstrated strong institutional adaptability in responding to digital transformation and pandemic-related constraints. In addition, the training enhanced participants’ professional competencies while fostering knowledge exchange, mutual understanding, and transnational professional networks. This study highlights that non-binding MoUs can be effectively implemented through clear program design, institutional capacity, and contextual responsiveness. It contributes to the literature on policy implementation and capacity-building diplomacy by providing empirical evidence on how dormant bilateral agreements can be reactivated through digital diplomatic training. Keywords: Diplomatic Education, Indonesia–Ecuador Cooperation, Online Training, South–South Cooperation, Capacity-Building Diplomacy.