The document provides an overview of customer satisfaction metrics from Zendesk's Customer Satisfaction Index. It finds that customer satisfaction averages 86% globally but varies significantly by industry, company size, target audience, and country. The top drivers of customer satisfaction are found to be scale of operations, efficiency (measured by first response time), and quality (measured by percentage of tickets resolved in one interaction). Best-in-class companies exhibit habits of immediate response, availability across multiple customer channels, and investment in self-service options.