The Selenium testing framework originated in 2004 as a proprietary tool developed by Jason Huggins at ThoughtWorks. It was later open-sourced and became an important part of automated testing for DevOps-inspired workflows. The tool has since evolved significantly, with the introduction of WebDriver in 2011, which merged with Selenium to form one web testing tool. Today, Selenium is well-suited for shift-left testing and continues to grow through its rich ecosystem of plugins and integrations. The demand for efficient automated testing will likely shape its development going forward, as companies seek to test and deliver software faster than ever before.