Your Net Promoter Score (NPS) is probably a 70, and it might be the most misleading number in your entire dashboard. It asks customers one simple question: “How likely are you to recommend us?” The score is easy to track and report, which is why so many brands got hooked on it. But its simplicity is also its biggest flaw when you're trying to build a truly customer-centric business.
As Mareile Osthus pointed out on eCommerce Australia, NPS can be a surprisingly deceptive vanity metric. A customer might give you a 9 out of 10 because their package arrived on time, but that doesn't tell you if they'll ever buy again, if they found your site easy to use, or if they feel any real connection to your brand. The score measures a vague intention, not concrete behavior. In e-commerce, that's a critical distinction. A high score that doesn't translate to repeat purchases isn't a measure of loyalty, it's just noise.
Instead of a broad satisfaction score, it's more powerful to measure what your customers actually do and experience. A better starting point is tracking Customer Effort Score (CES), a metric I've heard mentioned on shows like The eCom Ops Podcast. This measures how easy it was for a customer to resolve an issue or complete a purchase. A difficult checkout process is a concrete problem you can fix. Answering a support ticket quickly is an operational success you can measure and repeat. Those are real indicators of a good customer experience.
Beyond single interactions, you have to measure the relationship over time. Megan Whitman made a great point on Future Commerce that brands need to look past basic sales data to understand which stories and experiences actually tie customers to the brand. Are you tracking cohort retention, repeat purchase rates, and the average time between orders? These metrics tell you if you're building a loyal customer base or just acquiring a series of one-time buyers.
Ultimately, a customer-centric strategy has to be profitable. As Ryan Bartley explained on Future Commerce, you can make a strong business case for experience improvements by focusing on “input metrics” like site conversion that have a direct financial impact. I heard this echoed on Ecommerce Playbook, where the hosts talked about connecting every effort back to hitting a contribution margin target. An NPS score won't tell you if you're building a sustainable business, but a clear view of how customer behavior impacts your bottom line will.