What are the 4 major components of Selenium WebDriver?

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What are the 4 major components of Selenium WebDriver?

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Selenium 4, the latest version of Selenium,Have 3 Components , IDE WebDriver and Grid.Selenium RC is ruled out from Selenium 3 . Selenium4 has come up with advanced features like improvised Selenium IDE and Selenium Grid, relative web locators, and W3C compliance of WebDriver APIs.