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diff --git a/use-cases/src/site/sphinx/lifecycle.rst b/use-cases/src/site/sphinx/lifecycle.rst
index 6027fed..15b54b5 100644
--- a/use-cases/src/site/sphinx/lifecycle.rst
+++ b/use-cases/src/site/sphinx/lifecycle.rst
@@ -1,5 +1,113 @@
 .. _lifecycle-management:
 
-####################
-Lifecycle Management
-####################
+##############################
+Project Management (Lifecycle)
+##############################
+
+.. note:: You can experiment with the service by following the :doc:`quickstart`.
+
+From creation to its publication/deletion, documents pass through various ``PHASES`` of their life.
+These ``PHASES`` define what operations (called ``STEPS``) can be performed with the **project**, being them automatic or human-driven (e.g. moderated review).
+When invoked, operations may trigger collateral ``EVENTS`` (e.g. ``ON_EDIT``).
+The result of all these operations *may* change the nature of the target **project**, which contains a specific report for this (see :ref:`lifecycle`)
+
+.. note:: In brief : ``STEPS`` are operations that can be invoked by callers, ``EVENTS`` are collateral operations.
+
+**Projects** lifecycle can vary depending on the configuration declared in its related :doc:`ucd`.
+However they may change, each **project** lifecycle starts from the predefined ``PHASE = DRAFT``; what comes after that, depends on the configured lifecycle.
+
+.. figure:: _static/imgs/2phase_lc.png
+   :alt: PHASES and STEPS
+   A :ref:`2phase` lifecycle.
+
+In the figure above is represented a 2-PHASES lifecycle.
+In green, STEPS and PHASES defined by the lifecycle itself.
+In blue are re, the common operations Edit, Delete and the DRAFT PHASE.
+In red the DELETE *PHASE* (which isn't material).
+
+*****************
+Common Lifecycles
+*****************
+
+The suite comes with a pre-built set of implemented lifecycles with their STEPS, EVENTS and PHASES.
+
+====================
+2 - Phases Lifecycle
+====================
+.. figure:: _static/imgs/2phase_lc.png
+   :alt: 2 - PHASES Lifecycle
+
+====================
+3 - Phases Lifecycle
+====================
+.. figure:: _static/imgs/3phase_lc.png
+   :alt: 3 - PHASES Lifecycle
+
+
+*****************
+Operation on documents
+*****************
+.. note:: You can experiment with the service API by following the :doc:`quickstart`.
+
+.. warning:: Read and write permissions on *projects* are defined in :doc:`ucd`
+
+Common operations
+*****************
+While **projects** lifecycle can vary depending on the configuration declared in its related :doc:`ucd`, following operations are common and available for every **project**.
+Checkout the `swagger`_ documentation.
+
+- Create New : The starting operation of every *project*. It expects a JSON metadata document, which will constitute the :ref:`document` section of the **project**.
+- Edit : Allows for the replacement of :ref:`document`.
+- Delete : Deletes the specified **project**
+- List / get by Id : allows access to projects.
+
+Querying
+=====
+Querying allows for the filtered access of subsets of **projects**.
+The following options are allowed in query operations
+
+.. note:: Query engine is supported by MongoDB and exploits its query language. Check it out to learn more about it.
+
+- filter : condition by witch to select returned projects
+- ordering : field set and direction
+- paging : limit and offset
+- projection : projects fields selection to return in result
+
+
+Registering / Unregistering FileSets
+==================================
+:ref:`filesets` are sets of files representing a single entity, which need to be handled together (e.g. a dataset and its index, a file and its crc).
+
+Each :ref:`filesets` is (un)registered at a particular path of the :ref:`document` with requests with the following information :
+.. warning:: Filesets fields need to be defined in :ref:`ucd` in order to be registered.
+
+- field Name : **fileset** target field name
+- parent path : the path of the target parent for the *fileset*
+- field Definition path  : the path of the field definition inside schema
+- streams : url or gCube storage Volatile IDs of payloads and related filenames
+
+.. code:: json
+
+    {
+    "fieldDefinitionPath":"$.section._children[?(@.fileset)]",
+    "parentPath":"$.section",
+    "fieldName":"fileset",
+    "streams":[{"url":"https://www.cnr.it/sites/all/themes/custom/cnr03_theme/img/cnrlogo.svg","filename":"myLogo.svg"}]
+    }
+
+
+.. note:: Note that paths can be explicit or express a query. Refer to jsonpath lib.
+
+.. warning:: Paths are required to match a single field for fileset registration.
+
+
+Executing STEPS
+===============
+In order to expose a common API while serving varying / customizable possible scenarios, the service expose only a single method for STEP execution.
+
+The method **perform STEP** allows for the execution of the configured STEPs by serving requests with the following information:
+
+- STEP ID : must be supported by the configured lifecycle
+- options [optional]: a JSON document with all expected parameters for the execution of the specified STEP
+
+.. note:: Outcome of STEPS and operations is reported in :ref`lifecycle` section of the project.
\ No newline at end of file
diff --git a/use-cases/src/site/sphinx/plugins.rst b/use-cases/src/site/sphinx/plugins.rst
index f066cf6..7ce7941 100644
--- a/use-cases/src/site/sphinx/plugins.rst
+++ b/use-cases/src/site/sphinx/plugins.rst
@@ -3,3 +3,4 @@
 ###############
 Plugins
 ###############
+**Plugins** implements the
\ No newline at end of file
diff --git a/use-cases/src/site/sphinx/project.rst b/use-cases/src/site/sphinx/project.rst
index a44680d..11ad7c4 100644
--- a/use-cases/src/site/sphinx/project.rst
+++ b/use-cases/src/site/sphinx/project.rst
@@ -16,7 +16,7 @@ Project Model
    A Project contains both metadata and related FileSets
 
 
-.. note:: Every **Project** is associated to a :doc:`ucd` that defines among other things its structure, its lifecycle, access rules etc..
+.. note:: Each **Project** is associated to a :doc:`ucd` that determines among other things its structure, its lifecycle, access rules etc..
 
 *****************
 Project structure
diff --git a/use-cases/src/site/sphinx/suite.rst b/use-cases/src/site/sphinx/suite.rst
index 43be54b..a25a8f8 100644
--- a/use-cases/src/site/sphinx/suite.rst
+++ b/use-cases/src/site/sphinx/suite.rst
@@ -1,6 +1,7 @@
 .. _suite:
 
 .. _wiki: https://gcube.wiki.gcube-system.org/gcube/GeoPortal
+.. _swagger: https://api.d4science.org
 .. _gWiki: https://gcube.wiki.gcube-system.org/gcube/GeoPortal
 .. _gCube: https://www.gcube-system.org
 
@@ -43,9 +44,10 @@ Contents of this guide :
 .. toctree::
    :maxdepth: 2
 
-   quickstart
    architecture
    project
-   ucd
+   lifecycle
    plugins
+   ucd
+   quickstart
    example