Great question! Most managed Kubernetes services don't support OIDC (and for EKS, which does support custom OIDC providers, it requires restarting the entire control plane to edit the configuration).
Infra runs a lightweight process in-cluster that intercepts requests and verifies them - and yes, this process intercepts requests and then impersonates the correct users and groups.
Infra runs a lightweight process in-cluster that intercepts requests and verifies them - and yes, this process intercepts requests and then impersonates the correct users and groups.