A feasibility study in model based prediction of impact of changes on system quality

-We propose a method, called PREDIQT, for model based prediction of impact of architecture design changes on system quality attributes. PREDIQT supports simultaneous analysis of several quality attributes and their trade-offs. This paper argues for the feasibility of the PREDIQT method based on a comprehensive industrial case study targeting a system for managing validation of electronic certificates and signatures worldwide. We first give an overview of the PREDIQT method, and then present an evaluation of the method in terms of a feasibility study and a thought experiment. The evaluation focuses on security and its trade-offs with the overall quality attributes of the target system Oppdragsgiver: Research Council of Norwa