Net Customer Delighter Index The final piece of the program is the NCDI. The Net Customer Delight Index is the key customer research metric used to track the success of satisfying and keeping customers. How do you currently resolve complaints? NCDI is based
on the customer question(s) most closely related to the long-term success of the organization based on answers and strategies that can be developed to grow your Promoters and reduce your Detractors. This is a vital tool for the C-Suite.