This tutorial demonstrates how to set up dynamic preview environments on top of Kubernetes using GitHub Actions and Humanitec's IDP. The goal is to create a seamless testing experience for engineering teams, allowing them to test code changes in a realistic environment without blocking the deployment pipeline. By automating the creation and destruction of environments, teams can ensure faster and more reliable test automation, while also reducing the risk of introducing legacy artifacts or dependencies into their production environments. The tutorial provides a step-by-step guide on how to create a preview environment automatically when a new PR is opened, access the environment via a PR, keep it up-to-date with a PR, and delete the environment once it's not needed anymore.