diff --git a/config/concepts/platform.yaml b/config/concepts/platform.yaml
index c8a1ea3..cc6298e 100644
--- a/config/concepts/platform.yaml
+++ b/config/concepts/platform.yaml
@@ -3,8 +3,9 @@ related_concepts: [site]
 description: |
   A platform is a system for running application
   [workloads](workload.html).  A platform hosts [sites](site.html).
-  Skupper supports Kubernetes, Docker, Podman, and Linux.  Each site
-  in a network can run on any supported platform.
+  Skupper supports Kubernetes, Docker, Podman, and Linux. Note that Docker,
+  Podman and Linux platforms are referred to as *local system* platforms in
+  documentation.  Each site in a network can run on any supported platform.
 
   Platforms provide _namespaces_ for related workloads and resources.
   Skupper uses namespaces to host multiple independent sites on one
diff --git a/input/concepts/platform.md b/input/concepts/platform.md
index c5d26dd..6e4724f 100644
--- a/input/concepts/platform.md
+++ b/input/concepts/platform.md
@@ -9,8 +9,9 @@ refdog_links:
 
 A platform is a system for running application
 [workloads](workload.html).  A platform hosts [sites](site.html).
-Skupper supports Kubernetes, Docker, Podman, and Linux.  Each site
-in a network can run on any supported platform.
+Skupper supports Kubernetes, Docker, Podman, and Linux. Note that Docker,
+Podman and Linux platforms are referred to as *local system* platforms in
+documentation.  Each site in a network can run on any supported platform.
 
 Platforms provide _namespaces_ for related workloads and resources.
 Skupper uses namespaces to host multiple independent sites on one