The reason they call it a "family system" or a "layered defense" is that the tracking and targeting systems of each layer of technology enhance each others accuracy.
The included software also provides prepress professionals with the option to enhance soft proofing accuracy using test and report features approved by UGRA (the Swiss Center of Competence for Media and Printing Technology).
The Systems of Process build upon the SoR to extend and enhance the processes of the business thereby improving the efficiency, accuracy and visibility of all participants.