Power BI dashboards support data-driven decision-making by transforming raw data into actionable insights through visually compelling and interactive formats. They allow users to quickly identify trends, correlations, and anomalies, providing a clear understanding of business performance. Dashboards can be tailored to display key metrics relevant to specific roles or departments, ensuring that decision-makers focus on the most critical data. The ability to drill down into details and filter data on-the-fly empowers users to explore different scenarios and make informed decisions based on comprehensive, up-to-date information.