The Enterprise Governance Community of Interest (COI) Handbook is a critical component for achieving a high degree of work product integrity and correctness across the enterprise. This book defines enterprise governance, provides the compelling business case, and defines the measures of success. This book provides the organization engineering, policies, procedures, and rules that have engineered and governed successful COIs. This book also sets out the enterprise organizations that can create and manage COIs within an enterprise, and an enterprise organization. The Return on Investment for the Community of Interest Approach is compelling. It's 50% cheaper than the stove-pipe governance approach for 10 separate organizations, and it's 90% cheaper to thereafter add one more governed organization member. The book is engineered as a day-to-day operational handbook. The book can just be adopted at the start of a COI activity. Simply put, it's the COI's policies and procedures. It addresses the COI's Missions, Functions, Organizations, Positions, Duties and Responsibilities, Products, Costs, Activities, and Rules. No topic has been ignored because this book was derived from the operational policies and procedures from the three most successful COIs that exist today. This 400+ page book includes but not limited to: Rationale for governance across enterprise work products