Lessons Learned (LL) is knowledge or understanding gained by experiences that may be positive, as in a successful test or mission, or negative, as in a mishap or failure, or past incidents in current practices. A Lesson must be significant that has a real or assumed impact on operations; valid in factual and technical correctness; and applicable in identifies a specific design, process, or decision that reduces or eliminates the potential for failures and mishaps, or reinforces a positive result. Proved and validated Lessons Learned to be updated to the company plan and procedure.

Related Definitions: The Project Management; The Lessons Learned (LL)