--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/source/admln_guide/architecture.rst	Tue Dec 11 16:29:56 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
+
+
+Quickstart deployment
+---------------------
+
+Overview of the environement system after the :ref:`quickstart` installation.
+It's a very lite configuration, with only mandatory resourses.
+Obviously you can extend this system by connecting more resources like is described in the :ref:`config` chapiter
+
+
+.. image:: _static/architecture_quickstart.png
+
+
+
+Developpement 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
+
+
+Production deployment
+---------------------
+
+Use case in a more complete prodution environement.
+
+.. image:: _static/architecture_prod.png
+