NPS (Net Promoter Score) is a metric used to measure customer satisfaction and loyalty. It categorizes customers as Promoters, Passives, or Detractors based on how likely they would be to recommend a company to others. The NPS is simply the percentage of Promoters minus the percentage of Detractors. Many large, well-known companies use NPS to improve customer experience and focus on increasing Promoters and decreasing Detractors. Implementing an NPS system requires organizational commitment to prioritizing customer loyalty and taking action based on feedback.