The User Retention Index is a CRM metric that measures customer loyalty, engagement frequency, and the likelihood of continued service usage. By analyzing customer activity, renewal rates, and churn risk, businesses can improve customer retention strategies. AI-powered CRM retention analytics track long-term user behavior, helping businesses implement personalized engagement campaigns, loyalty incentives, and proactive support measures. A high customer stickiness score indicates strong brand loyalty, while a declining index signals the need for re-engagement efforts.