Fagan Inspection
Fagan Inspection is a formal, structured software review process developed by Michael Fagan at IBM in the 1970s. It involves a team-based, step-by-step examination of software artifacts (like code, design documents, or requirements) to detect defects early in the development lifecycle. The process is highly disciplined, with defined roles, phases, and metrics to ensure thoroughness and effectiveness in improving software quality.
Developers should learn and use Fagan Inspection when working on critical systems where high reliability and defect prevention are paramount, such as in aerospace, medical, or financial software. It is particularly valuable in waterfall or regulated environments to catch errors before they propagate to later stages, reducing rework costs and enhancing product stability. The methodology fosters team collaboration and knowledge sharing, making it a robust alternative to informal code reviews for complex projects.