diff --git a/README.rst b/README.rst
index 335f8f7..524de86 100644
--- a/README.rst
+++ b/README.rst
@@ -2,15 +2,17 @@
 os-traits
 =========
 
-`os-traits` is a library containing standardized trait strings.
+`os-traits` is an OpenStack library containing standardized trait strings.
 
-Traits are strings that represent a feature of some resource provider. This
-library contains the catalog of constants that have been standardized in the
-OpenStack community to refer to a particular hardware, virtualization, storage,
-network, or device trait.
+Traits are strings that represent a feature of a resource provider hosted by
+the Placement_ service. This library contains the catalog of constants that
+have been standardized in the OpenStack community to refer to a particular
+hardware, virtualization, storage, network, or device trait.
 
 * Free software: Apache license
 * Documentation: https://docs.openstack.org/os-traits/latest/
 * Source: http://opendev.org/openstack/os-traits
 * Bugs: https://storyboard.openstack.org/#!/project/openstack/os-traits
 * Release Notes: https://docs.openstack.org/releasenotes/os-traits
+
+.. _Placement: https://docs.openstack.org/placement/latest/