WebDriver

The W3C standard API for native browser automation: it drives user agents like a real user.

WebDriver is the established W3C Recommendation for browser automation, providing a platform- and language-neutral wire protocol to remotely control a user agent. It operates at a low level, driving browsers like Chrome, Firefox, and Edge natively, just as a human user would, which ensures robust and realistic interaction with web elements. This compact, object-oriented API is the core component of frameworks like Selenium, enabling developers and QA teams to build scalable, cross-browser regression automation suites using popular languages such as Java, Python, and C#.

https://www.selenium.dev/documentation/webdriver/