Selenium Ruby is a combination of the Ruby programming language and the Selenium testing framework, offering a robust solution for web automation testing. Ruby's clean syntax and extensive library support, along with Selenium's ability to automate browser interactions across different operating systems and browsers, make it a popular choice for developers. The article provides a comprehensive guide on setting up Selenium WebDriver in Ruby, using the Test::Unit framework for test execution, and running tests on cloud platforms like LambdaTest. It covers basics such as installing necessary gems, basic test assertions, and handling browser sessions, as well as advanced topics like running parallel tests and evaluating test results through dashboards. The tutorial is aimed at helping developers write efficient, scalable test scripts and it highlights the benefits of using Ruby for automation testing due to its simplicity and effectiveness in handling ordered data sets.