Every year, companies invest millions in software that looks impressive in presentations but reveals serious problems once it meets real operations. Systems that cannot scale. Services that rely on undocumented workarounds. Integrations that no one fully understands. Traditional M&A due diligence focuses on financial and legal checks. Yet the most critical risks often lie elsewhere entirely: within the system structure, the service model, and the operational reality behind the product. This book provides a practical approach to evaluating technology environments before making critical decisions. It introduces a clear, repeatable method for investigating systems, services, usability, scalability and the full product lifecycle, helping investors, founders, buyers and product leaders uncover hidden gaps earlier and close the gap between technology promise and operational reality.