*Result*: The sustainability assessment framework toolkit: a decade of modeling experience.
*Further Information*
*Software intensive systems play a crucial role in most, if not all, aspects of modern society. As such, both their sustainability and their role in supporting sustainable processes must be realized by design. To this aim, the architecture of software intensive systems should be designed to support sustainability goals; and measured to understand how effectively they do so. In this paper, we present the sustainability assessment framework (SAF) Toolkit—a set of instruments we developed to support software architects and design decision makers in modeling sustainability as a software quality property. The SAF Toolkit is the result of our experience gained in more than a decade of case studies in collaboration with industrial partners. We illustrate the toolkit with examples that come from some of such studies. We extract our lessons learned, our current research, and future plans to extend the SAF Toolkit for further architecture modeling and measurement. [ABSTRACT FROM AUTHOR]*