- Section 22.1 presents the classic cost of software quality model. It classifies quality costs into four classes: prevention costs, appraisal costs, internal failure costs and external failure costs. (1) Explain in your own words the main characteristics of each class of costs and indicate the differences between them. (2) Suggest three items for each class.
- Both cost of software quality models, the classic and the extended, assign costs to two main classes: costs of control and costs of failure of control.
a. Explain in your own words the nature of each class.
b. What would you consider to be the idea guiding this classification and what are its managerial aspects?