Winning with saucectl, Part 2` is a continuation of the previous article on using `saucectl`, a tool that helps improve test efficiency by automating test execution in the Sauce Labs cloud. The author, Allen Loew, shares his experience with `saucectl` and provides tips and lessons learned on how to get the most out of it. He discusses the need for a different test design approach due to the changes in test execution, and explains how to refactor tests to run well in this new paradigm. He also talks about parallel test execution, which can massively reduce time to result, but requires atomic test design with no dependencies on execution order. The author shares his experience with Sauce Labs' automated testing dashboard, which allows for real-time monitoring of test runs, video playback, and failure analysis. However, he notes that `saucectl` has confirmed that the primary test environment is under-sized and needs to be upgraded to keep up with the increasing test execution. He also discusses the importance of considering test data and scalability when using `saucectl`. Finally, he addresses an objection about using Jenkins as a test runner, arguing that it may not be necessary in all cases, especially if there are no benefits to its use.