Power BI dashboards enable data-driven decision-making by offering interactive visualizations that help users analyze complex data sets. By aggregating data from multiple sources into a single dashboard, users can gain deeper insights and identify trends, correlations, and anomalies more easily. The ability to filter data, drill down into specifics, and update reports in real-time ensures that decisions are based on the latest information. With these features, businesses can make faster, more informed decisions that lead to better outcomes.