This document discusses leadership development and organizational change best practices. It introduces an upcoming book featuring case studies of 18 leading organizations. The organizations were selected based on implementing extraordinary leadership development and change initiatives that achieved measurable business results. On average, the organizations invested $500,000 in their programs and achieved over $2 million in returns. The case studies will provide practical lessons on analyzing needs, building business cases, designing, implementing, and evaluating initiatives. They aim to help readers successfully lead change and development in their own organizations.