Customer satisfaction can be measured using various metrics, including: 1. Net Promoter Score (NPS): Measures customer loyalty and the likelihood of them recommending the business. 2. Customer Satisfaction Score (CSAT): Directly asks customers to rate their satisfaction with a product or service. 3. Customer Effort Score (CES): Measures how easy it is for customers to get their issues resolved. 4. Retention Rates: Tracks the percentage of returning customers over a period.