diff --git a/README.md b/README.md
index 851e903..1bb10ca 100644
--- a/README.md
+++ b/README.md
@@ -107,6 +107,12 @@ The consumer imports the table via `Table.fromTableName(...)` and is granted rea
 
 **Known exception (INFRA-51):** `amazon-po-parser` currently writes directly to `purchase-orders` outside this stack (backfill/enrichment scripts). This second writer is being folded into the `po-ingest` pipeline so this stack is the sole writer; until INFRA-51 closes, coordinate any schema change with `amazon-po-parser` as well.
 
+## Documentation
+
+The canonical map of Sea Haven's AWS infrastructure lives in Confluence. This project's `po-ingest` and `workorder-ingest` stacks are represented there as Mermaid subgraphs.
+
+- **[AWS Architecture Map](https://seahaven.atlassian.net/wiki/spaces/IT/pages/1540098)** (Confluence, IT space, page 1540098)
+
 ## CI/CD
 
 GitHub Actions with reusable workflows from `Sea-Haven-Industries/.github`: