These resources will help partners and stakeholders develop and apply national policies related to development impacts on biodiversity and the mitigation hierarchy. They provide an introduction to some of the themes that are important for understanding why and how biodiversity impacts should be reduced. These materials and information can guide development of policy and associated regulation. Databases and websites will improve access to data showing where impacts on priority biodiversity should be avoided in Strategic Environmental Assessments and sectoral planning. Better data will improve measurement of impacts for planning and siting of offsets. Guidance and other technical resources can help governments, the private sector and other partners develop offsets plans.