Learning from adaptation in practice: Lessons on effectiveness and sustainability through beneficiary perspectives in the Andes

As climate adaptation initiatives expand globally, learning from implemented solutions is increasingly important. Yet, while adaptation progress is typically tracked by implementing institutions through short-term output indicators during project implementation, critical evidence gaps exist regarding effectiveness and sustainability once formal project support ends. This presentation presents lessons from an evaluation exercise conducted by the University of Geneva and the Consorcio para el Desarrollo Sostenible de la Ecoregión Andina (CONDESAN) within the framework of the Adaptation at Altitude programme.Drawing on the perspectives of beneficiary communities and local stakeholders, the evaluation examines the effectiveness and long-term sustainability of five climate adaptation solutions implemented in mountain areas of the Andean region. All analyzed solutions were selected from the Adaptation at Altitude Solutions Portal on the basis of their transformative potential and relevance for replication. The analysis identifies best practices and lessons learned, as well as key enabling and constraining factors influencing both the effectiveness and sustainability of measures, including governance arrangements, local capacities, and social inclusion. Our findings aim to strengthen adaptation efforts in mountain regions, both in the Andes and beyond, providing evidence to inform policy and decision-making on robust, inclusive and actionable adaptation strategies.