Customer success ensures that customers realize business results from products through ongoing engagement, collecting usage data and metrics, and using KPIs, reports and playbooks to predict and enhance the customer experience. Customer success drives much more revenue than sales alone by helping customers adopt products and renew over time. Key customer success functions include account management, enablement, renewals/growth, and support. Common tools used are CRM, support, and survey platforms. Key metrics include renewal and growth rates, churn, customer satisfaction, and cost effectiveness. Metrics should be analyzed by customer cohorts to identify opportunities.