What professional achievement do you consider your most significant success?

One of the most significant professional achievements in QA Automation I consider the implementation of automated testing in a project where all tests were previously performed manually. This allowed reducing regression testing time from several days to a few hours, increasing release stability, and reducing the number of bugs in production. As part of this project, I developed a set of automated tests using Selenium and integrated them into the CI/CD pipeline, ensuring continuous quality checks.