diff --git a/README.md b/README.md
index f5bd814..a98c8bd 100644
--- a/README.md
+++ b/README.md
@@ -82,6 +82,12 @@ EventBridge (daily 02:00 UTC)
 
 This bot reads the `purchase-orders` DynamoDB table **read-only** (via the `po-sync` and `wo-po-lookup` Lambdas, both granted `grantReadData`). The table is owned by the `procurement-ingest` repo (`po-ingest` stack), which is the sole authoritative writer. Any change to the `purchase-orders` schema must be coordinated with `procurement-ingest` (owner) and `payments-dashboard` (the other read-only consumer).
 
+## Documentation
+
+The canonical map of Sea Haven's AWS infrastructure lives in Confluence. This project's `seahaven-slack-bot` 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)
+
 ## Prerequisites
 
 - Node.js 22+