This book reports on the research carried out to identify software architectural quality attributes with a view to ensuring that existing software systems follow a specific architecture for the quality to be determined exactly at all times. Qualitative and quantitative research approaches were used for the development and evaluation of an improved model. The model, Software Architecture Scenario-Based Performance Quality Model (SASPQuM) was developed in Unified Modelling Language using AgroUML Computer Aided Systems Engineering tool. The developed model was categorised into three: stimuli,...