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It is why it is one of the most vital pre-requisite of the test execution on Chrome. Without using ChromeDriver, it's not possible to run Selenium tests on the chrome browser. The sole purpose of the ChromeDriver is to launch and interact with Google Chrome. The Selenium tests interact with the ChromeDriver using the JsonWireProtocol, which translates the Selenium commands into corresponding actions on the Chrome browser. It is a standalone server that implements the open-source Selenium WebDriver Chromium Protocol.
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Chrome provides a driver, which can establish the connection between Selenium WebDriver & Google Chrome and run the Selenium test in Chrome browser. As Selenium offers cross-browser functionality allowing users to run test cases on different browsers, Selenium with Chrome browser makes the primary combination to test any web application on the browser platform.
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Given its importance and high user coverage, it has become critical for quality engineers to test websites/web-applications on the Chrome browser. The ease of use combined with multiple useful features makes it widely popular among users. Google Chrome currently dominates the global web browser market share.
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