This document provides an overview of Prosci and its approach to change management. It discusses Prosci's mission to help organizations build change management competencies through research-based tools and methodologies. It then covers the history and evolution of change management, from its foundations in the early 20th century through its increasing formalization and the growing role of dedicated change management functions in organizations. A key topic is the "democratization of change management", which refers to empowering more people throughout an organization to catalyze successful individual and organizational change.