Customer Health Score (CHS) is a common and helpful metric for Customer Success Managers (CSM). But, it is insufficient to address opportunities and challenges with your customers. Why? Because it focuses on the vendor-customer relationship and fails to assess the maturity of the customer in running their business. This is why Ralf Wiggten and I recently coined the term Customer Maturity Index (CMI) and developed a methodology for its calculation. Combining CMI with CHS provides the clarity needed for effective playbooks to maximize both the customer’s success and yours from the relationship. This presentation explores the short-comings of common Customer Health Scores, provides the case for Customer Maturity Index, details a suggested methodology for CMI development within a company and provides practical tools for such development.