The document summarizes an EcoHealth project in Southeast Asia that aimed to build capacity for sustainable management of zoonotic emerging infectious diseases (ZEIDs). It used an outcome mapping approach to engage stakeholders and assess changes in knowledge, attitudes, and practices. Key outcomes included country team members and paraprofessionals increasing their understanding of EcoHealth principles and ZEID management. Challenges included implementing monitoring and evaluation and integrating social science methods with limited resources. Lessons highlighted the importance of intentional stakeholder engagement and using participatory monitoring and evaluation to foster learning and adaptive management.