1. MRR Movement & Waterfall
Kicked off a new SQL + Power BI project diagnosing churn and growth in a SaaS business. Section one breaks down where MRR actually comes from and goes each month new business, expansion, contraction, and churn. The headline: 61x MRR growth over 37 months, but 73% of every dollar lost came from churn rather than downgrades. Growth was real, but so was the leak underneath it.