⚠ Retention Slows as Cohorts MatureModerate threat

Net revenue retention above 100% is a powerful engine, but it is a rate that naturally slows as customer cohorts mature, and that deceleration is a real risk to Adyen's growth. The land-and-expand dynamic works because a merchant that starts with a slice of its volume on Adyen has room to add more — more channels, more regions, more of its total volume. But that room is finite: once a large customer has consolidated most of its payments onto Adyen, the expansion opportunity within that account shrinks, and its incremental growth slows toward merely the growth of the merchant's own business. As Adyen's largest, oldest cohorts mature and approach full penetration, the outsized expansion that drove past retention naturally cools, and sustaining high net revenue growth requires ever more new expansion and new customers to replace it.

This maturation risk is compounded by competition and by the merchants' own cycles. Intensifying competition for the expansion — rivals fighting for the same incremental volume — can slow the rate at which Adyen wins additional share of maturing accounts, and a slowdown in the merchants' own growth (a soft consumer economy, a mature customer base) directly reduces the volume Adyen can capture. The 2023 growth wobble was in part exactly this: expansion decelerating faster than the market expected, as cohorts matured and competition bit. Adyen continues to add new customers and new expansion vectors (new products, new geographies, in-store) to refresh the engine, and its retention remains strong, so this is a headwind to manage, not a wall. But an investor should recognize that the land-and-expand dynamic has a natural deceleration built into it — the very success of penetrating a customer reduces the room to penetrate further — so the high retention that powers Adyen's growth is not a fixed rate but one that must be continually renewed against maturing cohorts, and whose slowing, when it comes, hits growth and the valuation together, as 2023 sharply showed¹.