Nowadays, Software Process Improvement popularly known as SPI has been able to receive an immense concern in the continuous process to purify software quality. Several Agile methodologies previously have worked with Extreme programming (XP). Before improving the process, defect prevention (DP) is inevitable. In addition, DP largely depends on defect detection either found earlier in the design and implementation stages or held in the testing phases. However, testing maturity model integration (TMMI) has a crucial aspect in DP as well as process improvement of the software. In particular, when software gets validated by being tested and fixed the defects up, it achieves the maximum capability maturity model integration (CMMI) aiming the process improvement. Here, the article has proposed an improved defect detection and prevention model to enhance the software process following the approach of XP. Besides, as a unique contribution, we have united the capability and testing model integration to ensure better SPI.

翻译：目前,在不断净化软件质量的过程中,人们通常称为SPI的软件改进软件改进程序已经受到极大关注,以前,有几种“敏化”方法与极端程序(XP)一起工作过。在改进程序之前,缺陷预防是不可避免的。此外,DP主要取决于在设计和实施阶段早期发现或测试阶段发现的缺陷检测。然而,测试成熟模型集成(TMMI)在DP以及软件的流程改进中都有一个至关重要的方面。特别是,当软件通过测试和修补缺陷得到验证时,它实现了最大能力成熟模型集成(CMMI),目的是改进程序。在这里,文章提出了改进缺陷检测和预防模式,以便按照XP的方法加强软件进程。此外,作为独特的贡献,我们还将能力与测试模型集成结合起来,以确保更好的SPI。