For two decades, SmartFactory-KL has stood for innovation, collaboration and technological foresight in the field of industrial production. During this time, we have worked with our partners to develop, test and implement forward-looking concepts.Below, we present the SmartFactory Reference Architecture, which offers companies a clear framework for successfully responding to increasing market and technological pressures. It supports a consistent data strategy, enables the gradual modernisation of existing production environments and, through openness and scalability, creates the basis for the integration of future key technologies.