Shift-left faster testing with Linux VMs` is a strategy adopted by development teams to adopt shift-left testing, which involves testing earlier in the development cycle. To implement this strategy, using Linux VMs can provide a secure and robust environment without significant costs. This approach has gained popularity, as revealed by the 2020 Stack Overflow Developer Survey, where 55% of professional developers use Linux. Sauce Labs offers Linux VMs that are lite and scalable for shift-left testing, allowing customers to test in headless mode. The company is currently running a Linux Beta until April 1, 2023, and invites customers to enroll and provide feedback. To start testing with the Linux Beta, users need to submit a signup form, which will be processed by Sauce Labs, and ensure their platform name is set to "Linux Beta". Additionally, users can test in headless mode using the `headless` arg built into webdriver options or through Sauce Connect tunnels if required.