Content Platform Subscriber Cohort Analysis Dashboard

Design an advanced Excel dashboard using Power Query and Power Pivot that performs granular cohort analysis for a digital content platform. The solution must track subscriber retention, lifetime value, and churn rates across multiple dimensions including geographic region, content genre, subscription tier, and acquisition channel. Implement dynamic segmentation that allows real-time filtering and predictive modeling of future subscriber behavior. Include advanced visualization techniques like heat maps and trend lines that update automatically with new data imports.