+Using Ingress as access method requires the installation of an Ingress
+controller and the configuration of the ONAP deployment to use it.
+
+For "ONAP on ServiceMesh" you can find the instructions in:
+
+- :ref:`oom_base_optional_addons`
+- :ref:`oom_customize_overrides`
+
+In the ServiceMesh deployment the Istio IngressGateway is the only access point
+for ONAP component interfaces.
+Usually the Ingress is accessed via a LoadBalancer IP (<ingress-IP>),
+which is used as central address.
+All APIs/UIs are provided via separate URLs which are routed to the component service.
+To use these URLs they need to be resolvable via DNS or via /etc/hosts.
+
+The domain name is usually defined in the `global` section of the ONAP helm-charts,
+`virtualhost.baseurl` (here "simpledemo.onap.org") whereas the hostname of
+the service (e.g. "sdc-fe-ui") is defined in the component's chart.
+
+.. code-block:: none
+
+ <ingress-IP> kiali.simpledemo.onap.org
+ <ingress-IP> cds-ui.simpledemo.onap.org
+ <ingress-IP> sdc-fe-ui.simpledemo.onap.org
+ ...
+
+To access e.g. the SDC UI now the new ssl-encrypted URL:
+
+``https://sdc-fe-ui.simpledemo.onap.org/sdc1``
+
+Access via NodePort/Loadbalancer (development)
+**********************************************
+
+In the development setop OOM operates in a private IP network that isn't