In a world where every subscription product claims to be global, most billing infrastructure tells a different story: one of failed payments, manual workarounds, and engineering bottlenecks that slow down the business. Smallpdf knew that feeling well. Starting with 36,000 subscribers and a product beloved in 220 countries, they faced a simple truth: the infrastructure underneath had to grow up before the business could scale out. Today, with 326,000 subscribers and involuntary churn cut in half, Smallpdf's journey is a masterclass in treating subscription infrastructure as a strategic asset, not an afterthought. Recurly's Guy Meyers sits down with Smallpdf’s Stéphane Turquay to dig into what it actually takes to build a subscription engine designed to grow - and what's on the horizon as AI reshapes what subscribers expect next.