Those two articles are talking about two different things.<p>ALIS is the logistics system for the program that has an off-jet and on-jet component. ALIS takes the role of a traditional computerized maintenance management system and expands it to include an on-aircraft prognostics and health monitoring component. The idea is to have the jet tell you what&#x27;s wrong with itself.<p>The article you linked to is about the F-35&#x27;s mission systems software, which is really a software suite that encompasses all the computers on the aircraft itself. The MS software load provides all the stuff necessary to make the jet&#x27;s hardware do what it needs to do to fight.