github-373-pr: Added index for AWS Region and LZ terms

Author: dfitzmau

supplementary_style_guide/glossary_terms_conventions/general_conventions/a.adoc

@@ -622,6 +622,26 @@ _Valid values are `arm64`._
 
 *See also*: xref:ARM64[ARM64]
 
+[[aws-local-zone]]
+==== image:images/yes.png[yes] AWS Local Zone (noun)
+*Description*: An _Amazon Web Services (AWS) Local Zone_ represents a location that places cloud resources closer to a metropolitan AWS Region. An AWS Local Zone location is prepended by an AWS Region code that is followed by an identifier, such as `us-west-2-lax-1a`. 
+
+*Use it*: yes
+
+*Incorrect forms*: Local Zone, LZ, local zone
+
+*See also*: xref:opt-in[opt in], xref:aws-opt-in-region[AWS opt-in Region]
+
+[[aws-opt-in-region]]
+==== image:images/yes.png[yes] AWS opt-in Region (noun)
+*Description*: An _Amazon Web Services (AWS) opt-in Region_ represents a world-wide location, which hosts Amazon's cloud-computing resources, where a customer must opt in to the AWS Region before they can deploy their OpenShift Container Platform cluster in this location. An AWS Region is represented by a regional service endpoint code, such as `us-east-2`.
+
+*Use it*: yes
+
+*Incorrect forms*: AWS region, AWS opt in Region
+
+*See also*: xref:opt-in[opt in]
+
 // Azure: Added "In Microsoft Azure" and removed "Microsoft Azure" from later in the sentence
 [[arm]]
 ==== image:images/yes.png[yes] Azure Resource Manager (noun)

supplementary_style_guide/glossary_terms_conventions/general_conventions/o.adoc

@@ -410,6 +410,16 @@ NOTE: When referring generally to other Kubernetes components, such as pods, nod
 
 *See also*:
 
+[[opt-in]]
+==== image:images/yes.png[yes] opt in (verb)
+*Description*: For Amazon Web Services (AWS), _opt in_ refers to manually selecting AWS opt-in Regions, which are usually locations that can offer higher security requirements than default commercial AWS Regions. A Red Hat customer who wants to deploy an OpenShift Container Platform cluster in an AWS Region or AWS Local Zone location must opt in to the location by configuring their AWS management account. For the gerund form of the phrase, use "opting in".
+
+*Use it*: yes
+
+*Incorrect forms*: opt into, opting into
+
+*See also*: xref:aws-opt-in-region[AWS opt-in Region], xref:aws-local-zone[AWS Local Zone]
+
 [[organization-administrator]]
 ==== image:images/yes.png[yes] Organization Administrator (noun)
 *Description*: From https://access.redhat.com/articles/1757953[Roles and Permissions for Red Hat Customer Portal]: Organization Administrator: This is the highest permission level for a Red Hat account with full access to content and features. This is the only role that can manage users and control their access and permissions on an account.