Explanation of Selenium and its advantages

How Selenium Works

Selenium sends commands from test code to a browser-specific driver, which translates them into native browser actions — clicking buttons, filling forms, navigating pages — and returns results back to the test.

Advantages

• Free and open-source: no licensing cost, unlike many commercial tools.
• Cross-browser and cross-platform: works across Windows, macOS, and Linux.
• Language flexibility: supports several popular programming languages.
• Strong ecosystem: integrates easily with TestNG, Maven, Jenkins, and reporting tools.