Revenue churn is the percentage of recurring revenue lost due to customer cancellations, downgrades, or non-renewals over a given period. It is a crucial metric for subscription-based and SaaS businesses, as high revenue churn can indicate poor customer retention and impact long-term profitability. By analyzing revenue churn, companies can identify trends, improve customer engagement strategies, and implement retention tactics such as loyalty programs, proactive customer support, and personalized outreach. Reducing revenue churn leads to a more stable revenue stream and higher customer lifetime value.