The Selenium suite consists of four main components: Selenium IDE, Selenium WebDriver, Selenium Grid, and Selenium RC (now deprecated). Selenium IDE is a record-and-playback tool for quick test creation. Selenium WebDriver allows advanced browser automation using programming languages like Java and Python. Selenium Grid enables parallel test execution across multiple environments. These components help testers automate web applications efficiently. To master Selenium and improve automation skills, enrolling in a selenium training in chennai can provide hands-on experience and industry insights, making you job-ready in the competitive software testing field.