This book bridges the critical gap between Enterprise Security Risk Management (ESRM) theory and practical implementation. While ESRM principles have gained widespread acceptance--particularly following ASIS International's endorsement--security professionals in real-world implementations consistently struggle with translating concepts into actionable strategies. This practical guide introduces a simple, operational framework centered around three core questions that help security leaders map ESRM directly to business outcomes and strategic decision-making. This book addresses the persistent "how-to" questions that practitioners face when attempting to implement ESRM in complex organizations. The book includes actionable field lessons, case examples, and practical tools that transform theory into measurable security impact. It addresses today's most urgent security challenges: organizational resilience amid a fast-changing global risk landscape, accelerating technology adoption (including AI), and an increasingly complex business and operational environment. As security programs face mounting pressure to demonstrate value, integrate with enterprise risk management, and build trust with non-security stakeholders, this accessible guide equips professionals to move beyond theoretical understanding and confidently lead ESRM implementation. This book serves as an essential resource for security leaders ready to translate ESRM principles into measurable outcomes that align the security strategy with broader business objectives.