In not just productivity. It needed precision, adaptability, and responsiveness . And from this constraint emerged one of the most influential ideas in modern production: the Andon cord .Process is the architectural construct through which a unit sustains execution over time, transforming interaction into coordinated, repeatable, and accountable action. It defines how work flows—what occurs, in what order, under what conditions, and with what responsibilities—ensuring that Purpose is not only expressed through Function but realized consistently in practice. Without Process, activity fragments into improvisation, coordination fails, and outcomes become unreliable. In Purpose Driven Design, Process is not a sequence of steps but a structured, evolvable system of flow—capable of absorbing variation, enabling feedback, and supporting learning. This chapter establishes Process as the architecture of execution, balancing designed order with emergent adaptation to ensure coherence, resilience, and sustained participation in sociotechnical systems.