In 1865, economist William Stanley Jevons observed something counterintuitive: more efficient steam engines cut coal consumption per unit by 75% and drove total consumption up dramatically. The Jevons Paradox. That's exactly what's happening in software development today. AI drives the cost of code generation to zero. A Code Crash that changes everything. The result isn't less software. It's an explosion.

In 2017, Matthias Schrader published "Transformational Products", which became the definitive reference for digital product development in the German-speaking world. Now he's back with the sequel. He describes how AI is fundamentally reshaping digital product development. And why a window is opening right now.

Those who missed the first wave of digitalization get a second chance. Maybe the last one. Because when code costs nothing, the only thing that matters is who asks the better questions. Schrader delivers with Soul, System, Speed the operating model for this restart: from the transformational spark through technical architecture to the intent-to-production pipeline. With case studies, concrete methods, and a clear-eyed look at the risks.

For everyone who wants to get it right this time.