Throughout time and across civilization, change has been the one constant. History books are bursting with examples of government, military, economic, and social change—some good, some bad. The same is true in the business world. From the trade guilds of The Middle Ages to the union factories of the industrial revolution, from the hard-wired cubicles of the Information Age to today’s distributed workforce connected by clouds, the world of business has always evolved. And it always will. In fact, the unprecedented, persistent, and rapid changes currently underway in organizations worldwide have made change management not only one of the most essential competencies of our profession, but of our time. Setting the stage for change begins by considering how change affects the organizations and people affected by it.