Power BI dashboards offer extensive customization options, allowing users to tailor the layout, design, and visualizations. Users can rearrange tiles, resize them, and choose from a wide variety of visual types, including charts, graphs, and KPIs. Color schemes, fonts, and backgrounds can be customized to align with company branding. Additionally, interactive features such as slicers, filters, and drill-through capabilities can be added to improve user experience. Custom visuals from the Power BI marketplace can also be integrated, enabling users to create more advanced or unique data visualizations.