This article addresses the organizational risk created by inadequate succession planning, arguing that most companies operate reactively rather than proactively when leadership vacancies occur. The author presents a six-step succession planning framework covering role identification, talent assessment, high-potential development, individual development plans, knowledge transfer, and ongoing plan review. Key evidence includes a claim that 70% of companies lack formal succession plans, that mismanaged transitions cost organizations $1 trillion annually, and that structured development programs reduce leadership transition failures by 30%, attributed to Center for Creative Leadership research. Real-world case studies of Albertsons and Kering/Gucci are used to illustrate planned versus reactive succession approaches. The article concludes that systematic succession planning delivers competitive advantage through bench strength, faster market adaptation, and improved talent retention. Throughout, Leapsome's platform is positioned as the enabling technology for each step of the framework, making the guide function simultaneously as a practitioner resource and a product promotion document. Key insights: 70% of companies operate without formal succession plans, despite mismanaged leadership transitions costing organizations an estimated $1 trillion annually. Succession planning effectiveness requires distinguishing between current performance and future leadership potential — high performance in an execution role does not predict success in a strategic leadership role. Middle management succession is identified as an underaddressed layer, with departures at that level creating cascading effects on client relationships, team morale, and revenue targets comparable to executive-level transitions. Practical takeaways: Organizations can scale succession planning by company size: small companies (50–200 employees) are described as focusing on 5–8 critical roles, mid-size organizations expanding to department-level planning, and enterprises creating division-specific templates with detailed competency frameworks. Knowledge transfer is framed as a structured process requiring documented decision frameworks, relationship mapping, and mentoring partnerships initiated months or years before anticipated transitions — not a handover activity triggered by departure announcements.