diff --git a/docs/developer/service-descriptions/uml/InternalTrustedDeploymentDiagram.puml b/docs/developer/service-descriptions/uml/InternalTrustedDeploymentDiagram.puml
new file mode 100644
index 0000000..13d26b0
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+++ b/docs/developer/service-descriptions/uml/InternalTrustedDeploymentDiagram.puml
@@ -0,0 +1,20 @@
+'-------------------------------------------------------------------------------
+' Copyright (c) 2021, Arm Limited and Contributors. All rights reserved.
+'
+' SPDX-License-Identifier: BSD-3-Clause
+'
+'-------------------------------------------------------------------------------
+
+@startuml
+
+node crypto_sp {
+	[its_frontend] -> [secure_storage_client]
+}
+
+node internal_trusted_store_sp {
+	[secure_storage_provider] -> [secure_flash_store]
+}
+
+[secure_storage_client] -> [secure_storage_provider]
+
+@enduml
\ No newline at end of file