“…This reveals that, increased test automation effort caused by improving the level of test automation maturity and product quality is not evidenced. Our finding conflicts with prior studies' viewpoint [33,28,37,30,31], which states that, at higher levels of test automation maturity and product quality, there is increased effort to develop and execute rigorous automated tests. Our finding confirms the other viewpoint, which states the effort savings may offset the invested effort when using standard best practices to perform rigorous test automation [32,34,35,39].…”