---
features:
  - |
    [`blueprint support-oauth2-mtls <https://blueprints.launchpad.net/keystone/+spec/support-oauth2-mtls>`_]
    Provide the option to use mutual TLS client authentication when accessing
    external servers from Tacker. OAuth2MtlsAuthHandle has been added to
    support Mutual-TLS client authentication for access from Tacker to external
    NFVO servers and notification endpoints using user-provided Mutual-TLS
    client certificates.