diff --git a/docs/index.rst b/docs/index.rst
--- a/docs/index.rst
+++ b/docs/index.rst
@@ -20,6 +20,12 @@
 * :ref:`architecture` ← go there to have a glimpse on the Software Heritage software
   architecture
 
+Data Model and Specifications
+-----------------------------
+
+* :ref:`persistent-identifiers` Specifications of the SoftWare Heritage persistent IDentifiers (SWHID).
+* :ref:`data-model` Documentation of the main |swh| archive data model.
+* :ref:`journal-specs` Documentation of the Kafka journal of the |swh| archive.
 
 Components
 ----------