The desired impact of the OH JPA is a world better able to prevent, predict, detect and respond to health threats and improve the health of humans, animals, plants and the environment while contributing to sustainable development. The OH JPA aims to work towards this vision in the following way: • Provide a framework for action and propose a set of activities the four organizations can offer together to advance and sustainably scale up One Health. • Provide upstream policy and legislative advice and technical assistance, to help set national targets and priorities across the sectors for the development and implementation of One Health legislation, initiatives and programmes. • Take stock of existing cross-sectoral global and regional initiatives around One Health, identify and advise on synergies and overlaps, and support coordination. • Mobilize and make better use of resources across sectors, disciplines and stakeholders. • The OH JPA is guided by a theory of change and makes use of One Health principles to strengthen collaboration, communication, capacity building and coordination