Discover how the CEL expression language integration in Kubernetes 1.23 revolutionizes CRD validation and admission control. Learn about the capabilities of CEL in Kubernetes, including multi-field validation rules and immutability checks, and explore its potential to simplify cluster operations and enhance development experiences. Gain insights from a seasoned Kubernetes contributor on the future of extensibility, the planned features, and the possibility of reducing reliance on webhooks. Understand how this integration addresses webhook fatigue and offers a more streamlined approach to extending Kubernetes functionality.