In any investment you should consider the
How do we quantify these when the investment is software?
The Cost Benefit Analysis Method (CBAM) extends the Architecture Tradeoff Analysis Method (ATAM) framework. The aim of the CBAM is to explicitly associate costs, benefits, and uncertainty with architectural decisions, as a means of optimizing the choice of such decisions.
This 39-slide presentation describes the reasons for using CBAM, the steps involves in conducting this analysis, and the type of expected results.