In light of the increased political support, international attention, and financial investment in restoration, the question this ‘Insight Brief’ aims to address is: How is evidence being used and integrated into (ecosystem) restoration processes and how can it be better utilised to inform and improve restoration action at scale? This brief seeks to highlight current issues around evidence in restoration with a view to providing input for future restoration projects and programmes under the UN Decade on Ecosystem Restoration, but also the diverse plans identified above.