Gainsight is the leading customer success platform that uses AI to help SaaS companies predict churn, identify expansion opportunities, and systematically grow net revenue retention. Its AI layer analyzes product usage data, support tickets, and customer health signals to trigger automated playbooks and surface the right actions for customer success managers. Companies like Workday, Adobe, and Salesforce use Gainsight to transform customer success from a reactive support function into a proactive revenue driver.