Major ClientsNarrow moat

Adyen's customer base is deliberately small. It serves a few thousand merchants rather than the millions its competitors count, and the reason is arithmetic: its interchange-plus pricing starts around 0.6% plus €0.11, which beats the alternatives for merchants processing more than roughly $250 million a year and makes no sense below that¹.

The resulting list is a who's-who rather than a distribution. Adyen processes for Uber, Spotify, McDonald's and Microsoft among others — companies whose payment volumes are enormous, whose requirements are international and omnichannel, and whose businesses are exactly the kind that a single platform serves better than twenty stitched-together ones.

That produces a customer profile with unusual properties. Adyen discloses no individual customer concentration, and its revenue is nonetheless dependent on a small number of very large relationships — each of which is deeply integrated, expensive to replace, and operated by a sophisticated buyer who knows precisely what its payments cost. The in-housing risk has its own root threat; these pages cover the shape of the base rather than the risk of losing it.

Watch net revenue retention. In a business with few customers, growth comes from existing merchants processing more and buying more products — and that single figure captures whether the land-and-expand model the moat rests on is still working.