The web application testing company Sauce Labs has achieved a significant milestone by exceeding five million completed Selenium tests in its cloud-based Sauce OnDemand service. This milestone demonstrates the ease-of-use and value of the service, which enables QA and development teams to test web application functionality across all popular browsers without maintaining complex testing infrastructure. The success of Sauce Labs' service can be attributed to its combination of cloud computing and deep Selenium expertise, as well as its open-source contributions to the Selenium community, including the release of Se Builder and OnDemand support for Selenium 2. These advancements have made automated testing with Selenium more accessible and scalable for QA and development teams, driving demand for cross-browser testing services like Sauce Labs' OnDemand service.