Software quality is related to both code and development process. Evaluating the quality, in order to improve it, is rather than simple. Tools for automated collection of code measures are available but the interpretation of the numbers extracted is not easy and further research is required. The evaluation of the process is even more complex due to the lack of tools for automated data collection and generation of the process model. The first phase of software development, regardless of the used methodology, is the architecture definition. The quality of the architecture affects all the subsequent phases and the shipped final product. This paper presents the use of PROM (PRO Metrics) for keeping track of the architecture design process.