Churn rate measures the percentage of customers who discontinue using a product or service within a given period. A high churn rate indicates customer dissatisfaction, poor onboarding, or strong competitor offerings. Businesses track churn using CRM systems, leveraging analytics to identify at-risk customers and implement retention strategies such as personalized engagement, loyalty programs, and proactive customer support. Subscription-based industries like SaaS, telecom, and financial services prioritize churn rate reduction to improve revenue stability and customer lifetime value.