Explore Test Impact Analysis (TIA) for JVM developers in this 41-minute Devoxx conference talk. Learn how TIA accelerates test automation by analyzing source code call-graphs to determine which tests to run after production code changes. Discover the benefits of TIA tools, especially for mono-repos used in large companies like Google and Microsoft. Gain insights into building an open-source tool similar to junit4git using JUnit extensions to ignore tests unrelated to recent Git repository changes. Understand how this modern approach can significantly speed up your build process and improve development efficiency.