EFQM User Guide
Is the Net Promoter Score 'the one number you need to grow', or is it an equally important growth measure than other loyalty questions? The answer is debatable. What is not up for debate is the fact that an increasing number of organisations are using the Net Promoter Score today. The Net Promoter Score is a customer loyalty metric developed by, and a registered trademark of, Fred Reichheld, Bain & Company, and Satmetrix. It was introduced by Reichheld in his Harvard Business Review article "One Number You Need to Grow" in 2003.