Developed a targeted testing capability for the microsoft/STL repository by introducing a dedicated EDG-focused test path, streamlining continuous integration workflows. Leveraging CMake for build system configuration and Python for scripting, the work centered on creating a custom 'test-only-edg' CMake target and integrating a corresponding parameter in params.py. Updates to tests.py ensured that only EDG tests execute when the flag is enabled, reducing unnecessary test runs and accelerating feedback cycles. This approach improved test automation by enabling more focused and reliable CI results, demonstrating a methodical application of build system and scripting skills to enhance project maintainability and efficiency.