Fred Reichheld is an American New York Times best-selling author, speaker, and business strategist, best known as the creator of the Net Promoter System℠ (NPS®). He is a Fellow at Bain & Company, where he has worked since 1977, and founded Bain’s Loyalty practice. The Economist named him the 'high priest' of loyalty, and The New York Times credits him with 'put[ting] loyalty economics on the map.