Organizations around the world are struggling to keep up with accelerating shifts in markets, technology and culture. Those that are succeeding not only have strong products, people, and technology – they also operate in a fundamentally different way. We call this new paradigm responsive because it creates organizations that are able to process change at speed – harnessing it to reveal new ways of organizing and working that are more fit to today’s environment. For over half a century, movements like lean manufacturing, learning organizations, and agile software development have introduced new models for growing organizations. In recent years, systems like Sociocracy and Holacracy have taken center stage, favoring continuous reorganization and distributed authority in the face of constant change. In the meantime, a sense of urgency grows inside today’s legacy organizations. With the average lifespan of firms on the S&P 500 continuing to plummet – from 60 years in 1960, to 15 years today – a critical question emerges. How can we organize to tackle meaningful problems today, at scale – and not break?