Selenium Grid Tutorial: Everything You Could Ever Want To Know

Selenium Grid is a tool designed to enhance testing efficiency by running tests across multiple browsers and operating systems simultaneously, reducing testing time from hours to minutes. It consists of two main components: the Hub, which accepts test requests and distributes them to nodes; and nodes, which are machines or virtual machines connected to the Hub that host one or more browser-OS setups. Selenium Grid offers numerous benefits such as parallel test execution, cross-browser and cross-platform testing, reduced infrastructure costs, improved test coverage, centralized test management, support for mobile testing, and seamless integration with CI/CD tools. It is most appropriate for large test suites, cross-browser testing, cross-platform testing, and continuous integration/continuous deployment pipelines. Setting up Selenium Grid can be done locally or using cloud-based solutions like Sauce Labs.