Add local zones graphics to architecture models section.

modules/rosa-architecture-local-zones.adoc

@@ -0,0 +1,18 @@
+// Module included in the following assemblies:
+//
+// * rosa_architecture/rosa_architecture_sub/rosa-architecture-models.adoc
+:_content-type: REFERENCE  
+[id="rosa-architecture-local-zones_{context}"]
+= ROSA architecture with Local Zones
+
+ROSA supports the use of AWS Local Zones, which are metropolis-centralized availability zones where customers can place latency-sensitive application workloads within a VPC. Local Zones are extensions of AWS Regions and are not enabled by default. When Local Zones are enabled and configured, the traffic is extended into the Local Zones for greater flexibility and lower latency. For more information, see xref:../../rosa_cluster_admin/rosa_nodes/rosa-nodes-machinepools-configuring.html[Configuring machine pools in Local Zones].
+
+The following diagram displays a ROSA cluster without traffic routed into a Local Zone.
+
+.ROSA cluster without traffic routed into Local Zones
+image::../images/354_OpenShift_ROSA_Local_Zones_0923_1.png[ROSA cluster without traffic routed into Local Zones]
+
+The following diagram displays a ROSA cluster with traffic routed into a Local Zone.
+
+.ROSA cluster with traffic routed into Local Zones
+image::../images/354_OpenShift_ROSA_Local_Zones_0923_2.png[ROSA cluster with traffic routed into Local Zones]

rosa_architecture/rosa_architecture_sub/rosa-architecture-models.adoc

@@ -14,3 +14,4 @@ ROSA has two installation offerings. The architecture supports the following net
 
 include::modules/rosa-architecture.adoc[leveloffset=+1]
 include::modules/osd-aws-privatelink-architecture.adoc[leveloffset=+1]
+include::modules/rosa-architecture-local-zones.adoc[leveloffset=+1]