What do you mean by NPS term?

This is a tool which is used to identify the customer relationship with the company to know that whether the customers are satisfied with the service or not.Net Promoter Score (NPS) is a rating used to gauge the loyalty or satisfaction of a firm’s customer relationships. This survey is typically administered on a scale of 1-10, with 9-10 considered as promoters, 6-8 as passives, and 1-6 as detractors.