“A planned and systematic pattern of all actions necessary to provide adequate confidence that the item or product conforms to established technical requirements.”
IEEE STD 610.12-1990
- An application is error-free and there is no bug,
- Fully documented,
- Maintainable down the line,
- Entirely functional according to every specification and requirement.
- Make sure that ordinary people, regular users, will be able to do everything that the application is supposed to empower them to do.