helm-external-secrets/docs/snippets/azkv-secret-store-mi.yaml

apiVersion: external-secrets.io/v1
kind: SecretStore
metadata:
  name: azure-store
spec:
  provider:
    azurekv:
      authType: ManagedIdentity
      # Optionally set the ID of the Managed Identity, if multiple identities are assigned to External Secrets Operator.
      identityId: "00000000-0000-0000-0000-000000000000"
      # URL of your Key Vault instance, see: https://docs.microsoft.com/en-us/azure/key-vault/general/about-keys-secrets-certificates
      vaultUrl: "https://my-keyvault-name.vault.azure.net"