Introduction to
Quality in
Free Software Development
Juan José Sánchez Penas
Master on Free Software

Quality?
ISO 8402 (1986): “the totality of features and
characteristics of a product or service that bear
on its ability to satisfy stated or implied needs''.
Later, in 1994: “the totality of characteristics
of an entity that bear on its ability to satisfy
stated and implied needs''.
Master on Free Software

Quality?
Pressman (1997): “conformance to
explicitly stated functional and performance
requirements; the explicitly documented
development standards; and the implicit
characteristics that are expected of all
professionally developed software.”
Master on Free Software