Authentication and Security2. K8s Security Architecture (Architecture)2. K8s Security Architecture (Architecture)Authentication and AuthorizationLearn about authentication and authorization, the core concepts of Kubernetes security.API Server Request Processing PluginsThe three stages of API server request processing: authentication, authorization, and admission controlMachine Users and Human Users in KubernetesKubernetes users fall into two kinds: human users (people) and machine users (machines/services).