COSMIC is a method based on fundamental software engineering principles, documented in the ISO/IEC 19761 standard and the measurememt scale is an open-ended ratio scale. The principles and rules specified in the Measurement Manual, which are domain independent, ensure that the method is ‘future-proof’.
FPA is a set of conventions aiming at providing a software size, originally based on dimensioning business application software as it was conceived in the late 1970’s. With the advent of new software paradigms, additional conventions are necessary to deal with each new feature.
For more, see Advantages of COSMIC.
Posted in: The COSMIC method