Meaning of Quality Assurance

This CW article led me to the meaning of QA ... " ... Long undervalued, quality assurance is in the limelight -- and QA pros in demand -- following the disaster of the HealthCare.gov website rollout. ... "  Quality assurance here is more about development.   Our own experiments combined the two elements.  Build a key system/process so that when it does fail, even rarely, you can readily bring experts or other resources to keep things running.  QA is a combination of design and resources.