Explore the e2e-framework for building confidence in Kubernetes controllers through this informative conference talk. Learn about the challenges of running end-to-end tests against real clusters and discover how the Testing Special Interest Group's out-of-tree Go framework addresses these issues. Gain insights from Datadog and Crossplane's experiences adopting the e2e-framework to test their clusters and controllers. Understand the reasons behind choosing this framework, get guidance on writing your own tests, and become aware of potential drawbacks. Enhance your ability to develop reliable cluster components and controllers with frequent updates through effective end-to-end testing strategies.