diff -r 097b0c025eec -r 49e4432c0a1d src/source/admin_guide/architecture.rst
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/source/admin_guide/architecture.rst	Thu Dec 13 10:51:53 2018 +0100
@@ -0,0 +1,47 @@
+.. _architecture:
+
+PyAMS application architecture
+==============================
+
+PyAMS applications are built on a small set of prerequisites and external components which *can* or, for some of them,
+*must* be included, the minimal configuration is:
+
+* a mandatory shared ZODB;  :ref:`zodb` chapter
+
+* a Redis or Memcached server, to handle cache and sessions;
+  :ref:`pyams_cache` chapter
+
+
+Single server deployment
+------------------------
+
+Overview of the environment system after the :ref:`quickstart` installation.
+It's a very lite configuration, with only mandatory resources.
+Obviously you can extend this system by connecting more resources like is described in the :ref:`config` chapiter
+
+
+.. image:: ../_static/architecture_quickstart.png
+
+
+
+Development deployment
+------------------------
+
+In additon of mandatory resource **PyAMS** could work with:
+
+* a websockets server (GuniCorn), used to handle desktop notifications;
+  you can find information about this component in the :ref:`pyams_notify` chapter;
+
+* an Elasticsearch index, used to handle quick and optimized searching.
+
+
+.. image:: ../_static/architecture_dev.png
+
+
+Advanced deployment
+-------------------
+
+Use case in an advanced environment.
+
+.. image:: ../_static/architecture_prod.png
+