assurance case

An assurance case is a structured argument that explains why a system or product is safe, reliable, or fit for its purpose. It combines evidence and reasoning to demonstrate that all necessary precautions and standards have been met. Think of it as a detailed, logical report that reassures stakeholders—like managers, regulators, or users—that the system will perform correctly and safely under expected conditions. Assurance cases are used in industries like aviation, healthcare, and software to build confidence and ensure accountability for safety and performance.