diff --git a/src/pages/guides/app_builder_guides/architecture_overview/architecture-overview.md b/src/pages/guides/app_builder_guides/architecture_overview/architecture-overview.md
index 698b8c26c..ed4d2cb1d 100644
--- a/src/pages/guides/app_builder_guides/architecture_overview/architecture-overview.md
+++ b/src/pages/guides/app_builder_guides/architecture_overview/architecture-overview.md
@@ -113,6 +113,10 @@ The [Errors SDK library](https://github.com/adobe/aio-lib-core-errors) is the ba
 
 The [Networking SDK library](https://github.com/adobe/aio-lib-core-networking) provides low-level networking tools such as exponential back-off that can be used in SDK libraries and custom API clients.
 
+##### Authentication
+
+The [Authentication SDK library](https://github.com/adobe/aio-lib-core-auth) helps Developers generate access tokens using OAuth service-to-service (S2S) credentials, enabling Runtime actions to call Adobe services.
+
 ### Token-Vending Machine
 
 The [Token-Vending Machine](https://github.com/adobe/aio-tvm) is exposed as an API deployed to Runtime, provided with App Builder.
diff --git a/src/pages/guides/references.md b/src/pages/guides/references.md
index 0db07b471..4f5bbd076 100644
--- a/src/pages/guides/references.md
+++ b/src/pages/guides/references.md
@@ -31,7 +31,8 @@ title: Reference Documentation
     * [Error Handling Library](https://github.com/adobe/aio-lib-core-errors)
     * [Configuration Library](https://github.com/adobe/aio-lib-core-config)
     * [Networking Library](https://github.com/adobe/aio-lib-core-networking)
-    * [Token-Vending Machine Client Library](https://github.com/adobe/aio-lib-core-tvm)
+    * [Authentication Library](https://github.com/adobe/aio-lib-core-auth)
+    * [Token-Vending Machine Client Library](https://github.com/adobe/aio-lib-core-tvm) 
 * [Github Actions Support](https://github.com/features/actions)
   * [Github Action to setup the CLI](https://github.com/adobe/aio-cli-setup-action)
   * [Github Action to use the CLI](https://github.com/adobe/aio-apps-action)