A Thesis for the Degree of Master

The problem of satisfying a desired level of quality attributes has been researched in the software architecture analysis domain. Architecture tradeoff analysis methods have been studied in order to examine whether an architecture meets the system quality and to know where the quality tradeoffs exist. Even though the Architecture Tradeoff Analysis Method (ATAM) provides a basic understanding of quality attributes from prior experiences, it does not help stakeholders in understanding the quality attributes in detail or in more precisely determining the importance of the tradeoff. This weakness can be compensated for by providing a framework for the reasoning of quality attributes. In this thesis, a quantitative analysis method of tradeoffs using an architecture analysis and design language is suggested. An architectural prototyping technique is