NPS is the de-facto standard for customer loyalty across almost every industry. That itself is a very useful thing. You can come up with a dozen other ways to t

NPS is the de-facto standard for customer loyalty across almost every industry. That itself is a very useful thing. You can come up with a dozen other ways to try to measure customer loyalty on your own, but then you're on your own. No way to compare to others in the space, no easily told story to press, investors, potential partners or high-profile clients etc.