Starting change management.

Author: eohartman

modules/rosa-policy-change-management.adoc

@@ -179,10 +179,10 @@ machine pool using the OpenShift Cluster Manager or the ROSA CLI (`rosa`).
 
 - Set up and configure Amazon EBS to provision local node storage and persistent volume storage for the cluster.
 
-- Set up and configure the built-in image registry to use Amazon S3 bucket storage.
+- Set up and configure the built-in image registry to use Amazon S3 bucket storage. ^[1]^
 
 - Regularly prune image registry resources in
-Amazon S3 to optimize Amazon S3 usage and cluster performance.
+Amazon S3 to optimize Amazon S3 usage and cluster performance. ^[2]^
 
 | - Optionally configure the Amazon EBS CSI driver or the Amazon
 EFS CSI driver to provision persistent volumes on the cluster.
@@ -232,4 +232,8 @@ creation.
 |- Implement change management best practices for customer
 applications and data hosted on the AWS Cloud.
 
-|===
+|===
+
+^[1]^ For more information on Authentication flow for AWS STS, see link:https://docs.redhat.com/en/documentation/openshift_container_platform/4.18/html/authentication_and_authorization/managing-cloud-provider-credentials#cco-short-term-creds-auth-flow-aws-diagram_cco-short-term-creds[Authentication flow for AWS STS].
+
+^[2]^ For more information on pruning images, see link:https://docs.redhat.com/en/documentation/openshift_container_platform/4.18/html/registry/registry-overview-1#pruning-images_registry-overview[Automatically Pruning Images].