A quarter point improvement of CAST Technical Quality Index reduces maintenance activity by 50%
Although the notion that higher quality systems are easier to work with is rather intuitive, it is often difficult to prove. Recently a CAST client analyzed more than 350 applications in several industries and geographies across 20 clients and captured the relationship between the structural quality of the applications, as determined by CAST’s Technical Quality Index (TQI), and the volume of maintenance fix ticket requests. The CAST TQI is a composition index generated by structural quality analysis from CAST Application Platform (AIP). The TQI score is determined by the number and type of critical violations and architectural vulnerabilities detected across technologies and tiers. The index ranges from 1.0 to 4.0, where 4.0 is the best score. Along with TQI, CAST AIP’s quality model scores an application’s health on several non-functional characteristics such as Robustness, Security, Performance Efficiency, Transferability, and Changeability.