diff --git a/platform/alz/README.md b/platform/alz/README.md
index 2db0346..12f865e 100644
--- a/platform/alz/README.md
+++ b/platform/alz/README.md
@@ -27,6 +27,8 @@ The following architectures are available in this library:
 ```mermaid
 flowchart TD
   alzroot["ALZ root\n(root)"]
+  alzroot --> decommissioned
+  decommissioned["Decommissioned\n(decommissioned)"]
   alzroot --> landingzones
   landingzones["Landing zones\n(landing_zones)"]
   landingzones --> corp
@@ -35,12 +37,12 @@ flowchart TD
   online["Online\n(online)"]
   alzroot --> platform
   platform["Platform\n(platform)"]
-  platform --> management
-  management["Management\n(management)"]
   platform --> connectivity
   connectivity["Connectivity\n(connectivity)"]
   platform --> identity
   identity["Identity\n(identity)"]
+  platform --> management
+  management["Management\n(management)"]
   alzroot --> sandboxes
   sandboxes["Sandboxes\n(sandboxes)"]
 
diff --git a/platform/alz/architecture_definitions/alz.alz_architecture_definition.json b/platform/alz/architecture_definitions/alz.alz_architecture_definition.json
index 62c4ff4..18e6532 100644
--- a/platform/alz/architecture_definitions/alz.alz_architecture_definition.json
+++ b/platform/alz/architecture_definitions/alz.alz_architecture_definition.json
@@ -11,6 +11,15 @@
       "id": "alzroot",
       "parent_id": null
     },
+    {
+      "archetypes": [
+        "platform"
+      ],
+      "display_name": "Platform",
+      "exists": false,
+      "id": "platform",
+      "parent_id": "alzroot"
+    },
     {
       "archetypes": [
         "landing_zones"
@@ -38,15 +47,6 @@
       "id": "online",
       "parent_id": "landingzones"
     },
-    {
-      "archetypes": [
-        "platform"
-      ],
-      "display_name": "Platform",
-      "exists": false,
-      "id": "platform",
-      "parent_id": "alzroot"
-    },
     {
       "archetypes": [
         "sandboxes"
@@ -82,6 +82,15 @@
       "exists": false,
       "id": "identity",
       "parent_id": "platform"
+    },
+    {
+      "archetypes": [
+        "decommissioned"
+      ],
+      "display_name": "Decommissioned",
+      "exists": false,
+      "id": "decommissioned",
+      "parent_id": "alzroot"
     }
   ]
 }