This document discusses mapping interactions between the United Nations Sustainable Development Goals using a seven-point scale to assess the relationships between targets. It describes analyzing first and second-order interactions to take a systems perspective and identify the most influential targets. The approach is meant to guide coherent policymaking and actions by understanding interlinkages, enabling integrated decision making, policy learning and alignment, and cross-sectoral coordination to find synergistic solutions. An example pilot study involving stakeholders in Sri Lanka is provided.