COTS: Technical Issues Must be accepted"as is"and may not satisfy user requirements. Compromises may be required May be difficult or impossible to certify(safety) Need to defend yourself from mistakes in suppliers code Developed to commercial not government or safety standards Requires continuous lifetime system engineering effort Identify and integrate product obsolescence information with technology trends and new user requirementsc Copyright Nancy Leveson, Sept. 1999 COTS: Technical Issues (2) Must be accepted "as is" and may not satisfy user requirements. Compromises may be required. May be difficult or impossible to certify (safety). Need to defend yourself from mistakes in supplier’s code. Developed to commercial not government or safety standards. Requires continuous lifetime system engineering effort. Identify and integrate product obsolescence information with technology trends and new user requirements. �