Customer referrals are new customers brought in by existing ones, through a referral program with a reward or by unprompted recommendation. The route has to supply a real share of new customers. Nubank grew this way: in 2021, 80 to 90% of its acquisition was organic, at a blended cost of about $5 a customer.
A satisfied customer tells someone like them, and the new customer arrives already trusting the product, so acquisition grows with the customer base instead of the marketing budget. Programs speed this up by rewarding the people who refer. Robinhood moved people up its pre-launch waitlist when friends signed up and gathered nearly a million signups before launch.
Referrals work best where buyers already talk to each other. ServiceTitan spent almost nothing on sales through 2014; by 2015 half its customers came through Nexstar and other trade associations, and prospects visited existing customers to see the software running.
Rivals can run referral programs too. The useful question is what makes customers recommend this product more often than its competitors.
From the win chains in Strategy Canon case studies: what the winner did, and what its rival did at the same step.
Trade-association referrals instead of paid sales
Supply seeded by hand, city by city
Customers recruit customers: waitlist, then referral program
Customer love as the acquisition channel
Also tagged: Atlassian · Credit Karma · Duolingo · GoodRx · Linode · Procore Technologies · Shopify · Sidecar · Toast
| What it is | How to tell it apart | Example | |
|---|---|---|---|
| Customer Referrals | Existing customers bring in new ones | A documented share of new customers came from a customer's recommendation | Nubank's 80–90% organic acquisition |
| Growth Loop | Product use itself exposes the product to new users | The product spreads through use, without anyone deciding to recommend it | LinkedIn invitations |
| Lighthouse Customers | Well-known early customers whose results persuade later buyers | The reference is used inside a sales process | Epic's completed deployments shown to later hospitals |
| Channel Partners | Advisers and resellers who sell the product and earn from each account | The recommender is paid as a partner | HubSpot's partner agencies |
| Author | What they call it / where it appears |
|---|---|
| Chen + | Viral and referral loops |
| Weinberg & Mares + | Viral marketing channel |