This publication from the National Academies Press provides a comprehensive review of the CCSP Draft Synthesis and Assessment Product 5.3. It focuses on decision-support experiments and the evaluation of seasonal to interannual forecasts alongside observational data. Developed by the National Research Council, this text serves as a critical assessment of climate-related decision-support systems. It is intended for researchers, policymakers, and academics interested in the integration of climate forecasting into practical decision-making frameworks. The document examines the methodology, efficacy, and application of these forecasts in real-world scenarios, offering a detailed analysis of the draft report's findings.