diff --git a/README.md b/README.md
index 03f7a87..922791b 100644
--- a/README.md
+++ b/README.md
@@ -108,6 +108,12 @@ All admin operations enforce server-side price recalculation from the menu.
 | DELETE | `/api/admin/orders?week=...&email=...` | Delete an order |
 | GET | `/api/admin/summary-pdf?week=YYYY-WNN` | Presigned URL for the week's summary PDF (404 if week not closed) |
 
+## Documentation
+
+The canonical map of Sea Haven's AWS infrastructure lives in Confluence. This project's `meal-order-manager` stack is represented there as a Mermaid subgraph.
+
+- **[AWS Architecture Map](https://seahaven.atlassian.net/wiki/spaces/IT/pages/1540098)** (Confluence, IT space, page 1540098)
+
 ## Setup
 
 ### Local development