Simplifying complex data begins with defining the core message and eliminating unnecessary details. Use data hierarchies to drill down into more granular insights while keeping the top-level data simple. Group similar data points and use summary metrics to present concise information. Visualizations like treemaps and funnel charts can help represent complex relationships in an easily digestible format. Additionally, tooltip pages allow users to explore additional data layers without cluttering the Power BI dashboards. A well-organized data model simplifies the back-end, making it easier to reflect clear insights in the dashboard.