https://www.cncf.io/blog/2022/06/15/kubernetes-operators-what-are-they-some-examples/Framework - Kubebuilder/Operator-sdkCapability Model https://operatorframework.io/operator-capabilities/Validation & DefaultingOpenAPI … ● Quantors for subschemas ○ allOf ○ oneOf ○ anyOf ○ notOpenAPI v3 schemas https://book.kubebuilder.io/reference/generating-crdValidation rules - Common Expression Language (CEL) ● Stable since (deployment, certs, build process) ● Validation webhooks is executed just after mutating webhook ● [Kubebuilder] As for now it’s not possible to write mutating and validating admission webhooks for non custom