Transition planning is the deliberate preparation of an organization for leadership changes. It involves identifying and developing potential successors, documenting critical knowledge, designing smooth handoffs, and ensuring organizational continuity when leaders depart or move up. Done well, transitions are seamless and build organizational strength. Done poorly, transitions create chaos, knowledge loss, and culture disruption. Key elements: identifying high-potential talent, creating development plans, knowledge transfer, design clear handoff processes, and supporting new leaders' first 100 days.