diff --git a/doc/rtd/reference/yaml_examples/launch_index.rst b/doc/rtd/reference/yaml_examples/launch_index.rst
index 42afc513962..4012398a7d6 100644
--- a/doc/rtd/reference/yaml_examples/launch_index.rst
+++ b/doc/rtd/reference/yaml_examples/launch_index.rst
@@ -1,7 +1,7 @@
 .. _cce-launch-index:
 
-Launch index
-************
+Amazon EC2 launch index
+***********************
 
 This configuration syntax can be provided to have a given set of cloud config
 data show up on a certain launch index (and not other launches).
@@ -17,3 +17,9 @@ file will always be used for all launch-indexes (i.e. the default behavior).
     # Default: false
     package_upgrade: true
 
+For further information on launch indexes, refer to the
+`Amazon EC2 documentation`.
+
+.. LINKS
+
+.. _Amazon EC2 documentation: https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/AMI-launch-index-examples.html