Key components of Power BI dashboards include visualizations (charts, graphs, and KPIs), tiles, and datasets. Visualizations display data insights, while tiles are the individual containers for each visualization on the dashboard. Data sources, such as datasets or external databases, feed into the dashboard. Interactive elements, like slicers and filters, allow users to customize the view based on specific criteria. Together, these components create a dynamic and informative interface for monitoring key business metrics and tracking performance.