Added built-in policies ref article

Author: ntrogh

articles/lab-services/TOC.yml

@@ -307,8 +307,9 @@
     href: /powershell/module/az.labservices/
   - name: Azure CLI
     href: https://github.com/Azure/azure-cli-extensions/tree/main/src/hack
-  - name: Built-in policies
-    href: ../governance/policy/samples/built-in-policies.md#lab-services
+  - name: Azure Policy built-ins
+    displayName: samples, policies, definitions
+    href: ./policy-reference.md
   - name: Microsoft Azure SDK for Python
     href: https://pypi.org/project/azure-mgmt-labservices/
 - name: Resources

articles/lab-services/policy-reference.md

@@ -0,0 +1,29 @@
+---
+title: Built-in policy definitions for Lab Services
+description: Lists Azure Policy built-in policy definitions for Azure Lab Services. These built-in policy definitions provide common approaches to managing your Azure resources.
+ms.date: 11/08/2022
+ms.topic: reference
+author: ntrogh
+ms.author: nicktrog
+ms.service: lab-services
+ms.custom: subject-policy-reference
+---
+# Azure Policy built-in definitions for Azure Lab Services
+
+This page is an index of [Azure Policy](../governance/policy/overview.md) built-in policy
+definitions for Azure Lab Services. For additional Azure Policy built-ins for other services, see
+[Azure Policy built-in definitions](../governance/policy/samples/built-in-policies.md).
+
+The name of each built-in policy definition links to the policy definition in the Azure portal. Use
+the link in the **Version** column to view the source on the
+[Azure Policy GitHub repo](https://github.com/Azure/azure-policy).
+
+## Azure Lab Services
+
+[!INCLUDE [azure-policy-reference-rp-lab-services](../../includes/policy/reference/byrp/microsoft.labservices.md)]
+
+## Next steps
+
+- See the built-ins on the [Azure Policy GitHub repo](https://github.com/Azure/azure-policy).
+- Review the [Azure Policy definition structure](../governance/policy/concepts/definition-structure.md).
+- Review [Understanding policy effects](../governance/policy/concepts/effects.md).