Customer satisfaction (CSAT) score.2. Customer Effort Score (CES).3. Net Promoter Score (NPS).4. Resolution time.5. Customer Retention Rate (CRR).6. Customer Churn.7. First Call Resolution Rate (FCR).8. First reply time (FRT).9. Total Number of Customer Support Tickets.10. Tickets solved.11. Ticket reopens.12. Replies per resolution.13. Handle time.14. Wait time.15. Next issue avoidance.16. Number of upsells and cross-sells.