ChromeDriver

ChromeDriver is a standalone executable that implements the W3C WebDriver standard to automate Google Chrome for testing.

ChromeDriver functions as the essential bridge between Selenium test scripts and the Chrome browser engine. It translates high-level commands into the JSON Wire Protocol (or W3C standard) to trigger specific browser actions like navigating URLs, clicking DOM elements, and executing JavaScript. Developers typically integrate it with frameworks like Pytest or JUnit to run headless regression suites. Since the release of Chrome 115, the Chrome for Testing (CfT) initiative ensures version parity between the driver and the browser, eliminating the common 'session not created' compatibility errors.

https://googlechromelabs.github.io/chrome-for-testing/