Improvement of Software Testing Processes With Test Maturity Model Integration

In this study, a maturity-level determination and assessment method developed for companies operating in the software industry to perform TMMi Levels 2 and 3 assessments in-house, with the goal of improving testing processes, is presented. With this method, it is aimed to help companies to conduct their own self-assessments and improve their testing processes before participating in high-budget audits. The validity of this method was tested in practice for TMMi Levels 2 and 3 assessments. Companies can prepare for a formal TMMi audit by using the test maturity-level determination methodology developed in this study, or they can simply improve their processes to produce higher quality products. Additionally, if they already have TMMi certification, they can regularly self-audit to ensure continuity and compliance. Demonstrating how TMMi can be applied in practice and providing a guide to test process maturity determination are key contributions of this work.