Simen A. W. Olsen, a Software Architect and Manager at Bjerk, discusses with Paul Stack the newly re-architected GitHub Action powered by the Pulumi Automation API. Initially launched as a Docker container action in 2018, this GitHub Action allowed users to run Pulumi commands within their workflows. However, the new version leverages JavaScript, offering a more streamlined and customizable experience by integrating Pulumi's Automation API, which enables infrastructure as code without needing a CLI. This transition not only simplifies the code but also enhances performance by eliminating the need for large Docker downloads and allowing for more control over the runtime environment and authentication with cloud providers. Users can now pin specific versions of NodeJS, Python, Go, .NET, or Pulumi and test their code against various runtime versions and operating systems. The new JavaScript-based Action offers faster performance, improved flexibility, and easier integration with existing CI/CD workflows, encouraging users to migrate and provide feedback to the Pulumi team.