diff --git a/guestbook/guestbook-ui-mapping.yaml b/guestbook/guestbook-ui-mapping.yaml
new file mode 100644
index 0000000..cacfcc1
--- /dev/null
+++ b/guestbook/guestbook-ui-mapping.yaml
@@ -0,0 +1,8 @@
+---
+apiVersion: getambassador.io/v2
+kind: Mapping
+metadata:
+  name: guestbook-ui
+spec:
+  prefix: /
+  service: guestbook-ui