diff --git a/README.rst b/README.rst
index 018f6297e..e23198627 100644
--- a/README.rst
+++ b/README.rst
@@ -21,15 +21,18 @@ packages.
 Documentation
 -------------
 
-* `Documentation <http://python-otcextensions.readthedocs.io/en/latest/>`
+`Documentation Overview <http://python-otcextensions.readthedocs.io/en/latest/>`_
 
 Installation
 ------------
 
+`Installation Page <https://python-otcextensions.readthedocs.io/en/latest/install/index.html>`_
+
 The OTC Extensions are hosted as the package `otcextensions` on PyPI
 and can be installed by pip as
 
 .. code-block: console
+
    $ pip install otcextensions
 
 There are several options
@@ -38,10 +41,11 @@ installation as well as installation from operating system packets or directly
 from source. Refer to the installation instructions_ in the projects
 documentation.
 
-
 Configuration
 -------------
 
+`Configuration Page <https://python-otcextensions.readthedocs.io/en/latest/install/configuration.html>`_
+
 Acessing the Open Telekom Cloud APIs requires authentication and
 authorization. For both there are several options available:
 
@@ -58,26 +62,28 @@ authorization. For both there are several options available:
 
   .. code-block:: yaml
 
-      clouds:
-          otc:
-          profile: otc
-              auth:
-                  username: "*username*"
-                  password: "*password*"
-                  project_name: "eu-de"
-                  auth_url: "https://iam.eu-de.otc.t-systems.com:443/v3"
-                  user_domain_name: "*OTC00000000001000000xxx*"
-             interface: "public"
-             identity_api_version: 3
-             ak: "*40 digit access key*"
-             sk: "*20 digit secure key*"
+    clouds:
+      otc:
+        profile: otc
+        auth:
+          username: '<USER_NAME>'
+          password: '<PASSWORD>'
+          project_name: '<eu-de_project>'
+          # or project_id: '<123456_PROJECT_ID>'
+          user_domain_name: 'OTC00000000001000000xxx'
+          # or user_domain_id: '<123456_DOMAIN_ID>'
+          auth_url: 'https://iam.eu-de.otc.t-systems.com:443/v3'
+        interface: 'public'
+        identity_api_version: 3 # !Important
+        ak: '<AK_VALUE>' # AK/SK pair for access to OBS
+        sk: '<SK_VALUE>'
 
   With this configuration you can start using the CLI with ``openstack
   --os-cloud otc *command*`` or by ``export OS_CLOUD=otc; openstack
   *command*``.
 
 * **Environment variables:** Authentication using username/password is often
-  used:
+  used::
 
     export OS_AUTH_URL=<url-to-openstack-identity>
     export OS_IDENTITY_API_VERSION=3
@@ -89,7 +95,6 @@ authorization. For both there are several options available:
     export S3_ACCESS_KEY_ID=<access_key>
     export S3_SECRET_ACCESS_KEY=<secret_access_key>
 
-
 * **Command-Line Options:** The corresponding command-line options look
   very similar::
 
@@ -111,7 +116,7 @@ authorization. For both there are several options available:
     export OS_TOKEN=<token>
     export OS_URL=<url-to-openstack-service>
 
-The corresponding command-line options look very similar::
+* The corresponding command-line options look very similar::
 
     --os-token <token>
     --os-url <url-to-openstack-service>
@@ -123,16 +128,20 @@ https://docs.openstack.org/python-openstackclient/latest/cli/authentication.html
 or
 https://developer.openstack.org/sdks/python/openstacksdk/users/config
 
+OTC Extensions CLI Usage
+------------------------
+
+`OTCE CLI Command Overview <https://python-otcextensions.readthedocs.io/en/latest/cli/index.html>`_
 
-Writing Own Code
-----------------
+OTC Extensions SDK Guides
+-------------------------
 
-XXX Example XXXX
+`OTCE SDK Guides <https://python-otcextensions.readthedocs.io/en/latest/sdk/guides/index.html>`_
 
 Contributing
 ------------
 
-See CONTRIBUTING.rst
+* `Contribution Page <https://python-otcextensions.readthedocs.io/en/latest/contributor/index.html>`_
 
 Further Links
 -------------
@@ -140,4 +149,3 @@ Further Links
 * `Issue Tracker <https://github.com/OpenTelekomCloud/python-otcextensions/issues>`_
 
 .. _instructions: http://python-otcextensions.readthedocs.io/en/latest/install/
-
diff --git a/doc/source/cli/ces.rst b/doc/source/cli/ces.rst
new file mode 100644
index 000000000..640e381b7
--- /dev/null
+++ b/doc/source/cli/ces.rst
@@ -0,0 +1,43 @@
+Cloud Eye Service (CES)
+=======================
+
+The CES client is the command-line interface (CLI) for
+the Cloud Eye Service (CES) API and its extensions.
+
+For help on a specific `ces` command, enter:
+
+.. code-block:: console
+
+   $ openstack ces help SUBCOMMAND
+
+.. _alarm:
+
+Alarm Rule Operations
+---------------------
+
+.. autoprogram-cliff:: openstack.ces.v1
+   :command: ces alarm *
+
+.. _metric:
+
+Metric Operations
+-----------------
+
+.. autoprogram-cliff:: openstack.ces.v1
+   :command: ces metric *
+
+.. _quota:
+
+Quota Operations
+----------------
+
+.. autoprogram-cliff:: openstack.ces.v1
+   :command: ces quota *
+
+.. _event_data:
+
+Event Data Operations
+---------------------
+
+.. autoprogram-cliff:: openstack.ces.v1
+   :command: ces event data *
diff --git a/doc/source/cli/identity.rst b/doc/source/cli/identity.rst
new file mode 100644
index 000000000..d87454569
--- /dev/null
+++ b/doc/source/cli/identity.rst
@@ -0,0 +1,19 @@
+Identity Service (IAM)
+======================
+
+The Identity client is the command-line interface (CLI) for
+the Identity Service (IAM) API and its extensions.
+
+For help on a specific `identity` command, enter:
+
+.. code-block:: console
+
+   $ openstack identity help SUBCOMMAND
+
+.. _identity_credential:
+
+Identity Credential Operations
+------------------------------
+
+.. autoprogram-cliff:: openstack.identity.v3
+   :command: identity credential *
diff --git a/doc/source/cli/index.rst b/doc/source/cli/index.rst
index 57414f124..7cd2bca7a 100644
--- a/doc/source/cli/index.rst
+++ b/doc/source/cli/index.rst
@@ -26,11 +26,13 @@ documentation of these services:
    anti_ddos
    auto_scaling
    cce_v2
+   ces
    cts
    dcs
    deh
    dms
    dns
+   identity
    kms
    load_balancer
    nat
diff --git a/doc/source/coverage.rst b/doc/source/coverage.rst
index 7a92a6940..48fd4548b 100644
--- a/doc/source/coverage.rst
+++ b/doc/source/coverage.rst
@@ -44,8 +44,8 @@ under several service tags. This may change in future.
     * - ces
       - Cloudeye
       - X
-      -
-      -
+      - X
+      - X
       -
     * - cts
       - Clout Trace Service
diff --git a/doc/source/enforcer.py b/doc/source/enforcer.py
index 7c6d46953..9d17ff323 100644
--- a/doc/source/enforcer.py
+++ b/doc/source/enforcer.py
@@ -42,6 +42,7 @@ def get_proxy_methods():
     names = ["otcextensions.sdk.anti_ddos.v1._proxy",
              "otcextensions.sdk.auto_scaling.v1._proxy",
              "otcextensions.sdk.cce.v1._proxy",
+             "otcextensions.sdk.ces.v1._proxy",
              "otcextensions.sdk.cts.v1._proxy",
              "otcextensions.sdk.dcs.v1._proxy",
              "otcextensions.sdk.dms.v1._proxy",
diff --git a/doc/source/sdk/guides/ces.rst b/doc/source/sdk/guides/ces.rst
new file mode 100644
index 000000000..f4916caea
--- /dev/null
+++ b/doc/source/sdk/guides/ces.rst
@@ -0,0 +1,115 @@
+Cloud Eye Service (CES)
+=========================
+
+Cloud Eye (CES) is a high-performance monitoring service with integrated
+alarm functions. Open Telekom Cloud users benefit from a dashboard with
+a basic overview of resources and their current status. Users can
+configure the alarm function in such a way that they receive
+notifications via SMS or email. Monitoring with the Cloud Eye Service
+is activated by default; the free service does not need to be booked
+or activated.
+
+.. contents:: Table of Contents
+   :local:
+
+CES Alarm Rule
+--------------
+
+The alarm function is based on collected metrics. You can set alarm rules for
+key metrics of cloud services. When the metric data triggers the conditions
+set in the alarm rule, Cloud Eye sends emails, or text messages, to you, or
+sends HTTP/HTTPS requests to the servers. In this way, you are immediately
+informed of cloud service exceptions and can quickly handle the faults to
+avoid service losses.
+
+Cloud Eye uses the SMN service to notify users. This
+requires you to create a topic and add subscriptions to this topic on the
+SMN console first. Then when you create alarm rules, you can enable the
+Alarm Notification function and select the created topic. When an error
+occurs, Cloud Eye can broadcast alarm information to those subscriptions in
+real time.
+
+
+Create Alarm Rule
+^^^^^^^^^^^^^^^^^
+
+This interface is used to create a CES alarm with parameters.
+
+.. literalinclude:: ../examples/ces/create_alarm.py
+   :lines: 16-89
+
+Get Alarm Rule
+^^^^^^^^^^^^^^
+
+This interface is used to get a CES alarm rule by name or ID or an instance of
+class :class:`~otcextensions.sdk.ces.v1.alarm.Alarm`.
+
+.. literalinclude:: ../examples/ces/get_alarm.py
+   :lines: 16-24
+
+Delete Alarm Rule
+^^^^^^^^^^^^^^^^^
+
+This interface is used to delete a CES Alarm Rule instance by id
+or an instance of class
+:class:`~otcextensions.sdk.cts.v1.tracker.Tracker`.
+
+.. literalinclude:: ../examples/ces/delete_alarm.py
+   :lines: 16-25
+
+Switch Alarm Rule State
+^^^^^^^^^^^^^^^^^^^^^^^^
+
+This interface is used to switch the Alarm Rule State by using name or id.
+
+.. literalinclude:: ../examples/ces/switch_alarm_state.py
+   :lines: 16-25
+
+
+Monitoring Data Management
+--------------------------
+
+Monitoring / Metric data is used to generate and query custom monitoring
+data.
+
+List Metric Data
+^^^^^^^^^^^^^^^^
+
+This interface is used to query all CES metric data and to filter
+the output with query parameters.
+
+.. literalinclude:: ../examples/ces/list_metric_data.py
+   :lines: 16-34
+
+
+Miscellaneous
+-------------
+
+List Metrics
+^^^^^^^^^^^^
+
+This API is used to query the metric list. You can specify the namespace,
+metric, dimension, sorting order, start records, and the maximum number of
+records when using this API to query metrics.
+
+.. literalinclude:: ../examples/ces/list_metrics.py
+   :lines: 16-23
+
+List Quotas
+^^^^^^^^^^^
+
+This API is used to query a resource quota and the used amount. The current
+resource refers to alarm rules only.
+
+.. literalinclude:: ../examples/ces/list_quotas.py
+   :lines: 16-23
+
+List Host Configuration / Event Data
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+This API is used to query the host configuration for a specified event type
+in a specified period of time. You can specify the dimension of data to be
+queried.
+
+.. literalinclude:: ../examples/ces/list_event_data.py
+   :lines: 16-32
diff --git a/doc/source/sdk/guides/index.rst b/doc/source/sdk/guides/index.rst
index 04f39aab3..9aab4c3cc 100644
--- a/doc/source/sdk/guides/index.rst
+++ b/doc/source/sdk/guides/index.rst
@@ -10,6 +10,7 @@ Open Telekom Cloud related User Guides
    anti_ddos
    auto_scaling
    cce
+   ces
    cts
    dcs
    deh
diff --git a/doc/source/sdk/proxies/ces.rst b/doc/source/sdk/proxies/ces.rst
new file mode 100644
index 000000000..d3e71f29f
--- /dev/null
+++ b/doc/source/sdk/proxies/ces.rst
@@ -0,0 +1,34 @@
+CES API
+=======
+
+.. automodule:: otcextensions.sdk.ces.v1._proxy
+
+The Cloud Eye Service Class
+---------------------------
+
+The CES high-level interface is available through the ``ces``
+member of a :class:`~openstack.connection.Connection` object.  The
+``ces`` member will only be added if the
+``otcextensions.sdk.register_otc_extensions(conn)`` method is called.
+
+Alarm Rule Operations
+^^^^^^^^^^^^^^^^^^^^^
+
+.. autoclass:: otcextensions.sdk.ces.v1._proxy.Proxy
+  :noindex:
+  :members: alarms, get_alarm, create_alarm, delete_alarm, find_alarm,
+           switch_alarm_state
+
+Monitoring Data Operations
+^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+.. autoclass:: otcextensions.sdk.ces.v1._proxy.Proxy
+  :noindex:
+  :members: metric_data
+
+Miscellaneous Operations
+^^^^^^^^^^^^^^^^^^^^^^^^
+
+.. autoclass:: otcextensions.sdk.ces.v1._proxy.Proxy
+  :noindex:
+  :members: metrics, quotas, event_data
diff --git a/doc/source/sdk/proxies/cts.rst b/doc/source/sdk/proxies/cts.rst
index 7148a9ca2..77a70f6e7 100644
--- a/doc/source/sdk/proxies/cts.rst
+++ b/doc/source/sdk/proxies/cts.rst
@@ -3,8 +3,8 @@ CTS API
 
 .. automodule:: otcextensions.sdk.cts.v1._proxy
 
-The Distributed Message Service Class
--------------------------------------
+The Cloud Trace Service Class
+-----------------------------
 
 The CTS high-level interface is available through the ``cts``
 member of a :class:`~openstack.connection.Connection` object.  The
diff --git a/doc/source/sdk/proxies/index.rst b/doc/source/sdk/proxies/index.rst
index 6d3c27ed8..65ad58c75 100644
--- a/doc/source/sdk/proxies/index.rst
+++ b/doc/source/sdk/proxies/index.rst
@@ -8,6 +8,7 @@ Service Proxies
    AutoScaling Service (AS) <auto_scaling>
    Cloud Container Engine v1 (CCEv1) <cce_v1>
    Cloud Container Engine v2 (CCE) <cce_v3>
+   Cloud Eye Service (CES) <ces>
    Cloud Trace Service (CTS) <cts>
    Distributed Cache Service (DCS) <dcs>
    Dedicated Host Service (DeH) <deh>
diff --git a/doc/source/sdk/resources/ces/index.rst b/doc/source/sdk/resources/ces/index.rst
new file mode 100644
index 000000000..ddd5b338e
--- /dev/null
+++ b/doc/source/sdk/resources/ces/index.rst
@@ -0,0 +1,11 @@
+CES Resources
+=============
+
+.. toctree::
+   :maxdepth: 1
+
+   v1/alarm
+   v1/event_data
+   v1/metric
+   v1/metric_data
+   v1/quota
diff --git a/doc/source/sdk/resources/ces/v1/alarm.rst b/doc/source/sdk/resources/ces/v1/alarm.rst
new file mode 100644
index 000000000..99d858100
--- /dev/null
+++ b/doc/source/sdk/resources/ces/v1/alarm.rst
@@ -0,0 +1,13 @@
+otcextensions.sdk.ces.v1.alarm
+==============================
+
+.. automodule:: otcextensions.sdk.ces.v1.alarm
+
+The CES Alarm Rule Class
+------------------------
+
+The ``Alarm`` class inherits from
+:class:`~otcextensions.sdk.sdk_resource.Resource`.
+
+.. autoclass:: otcextensions.sdk.ces.v1.alarm.Alarm
+   :members:
diff --git a/doc/source/sdk/resources/ces/v1/event_data.rst b/doc/source/sdk/resources/ces/v1/event_data.rst
new file mode 100644
index 000000000..d53ff12f3
--- /dev/null
+++ b/doc/source/sdk/resources/ces/v1/event_data.rst
@@ -0,0 +1,13 @@
+otcextensions.sdk.ces.v1.event_data
+===================================
+
+.. automodule:: otcextensions.sdk.ces.v1.event_data
+
+The CES Event Data Class
+------------------------
+
+The ``Event Data`` class inherits from
+:class:`~otcextensions.sdk.sdk_resource.Resource`.
+
+.. autoclass:: otcextensions.sdk.ces.v1.event_data.EventData
+   :members:
diff --git a/doc/source/sdk/resources/ces/v1/metric.rst b/doc/source/sdk/resources/ces/v1/metric.rst
new file mode 100644
index 000000000..859d6ed28
--- /dev/null
+++ b/doc/source/sdk/resources/ces/v1/metric.rst
@@ -0,0 +1,13 @@
+otcextensions.sdk.ces.v1.metric
+===============================
+
+.. automodule:: otcextensions.sdk.ces.v1.metric
+
+The CES Metric Class
+--------------------
+
+The ``Metric`` class inherits from
+:class:`~otcextensions.sdk.sdk_resource.Resource`.
+
+.. autoclass:: otcextensions.sdk.ces.v1.metric.Metric
+   :members:
diff --git a/doc/source/sdk/resources/ces/v1/metric_data.rst b/doc/source/sdk/resources/ces/v1/metric_data.rst
new file mode 100644
index 000000000..247fe19fc
--- /dev/null
+++ b/doc/source/sdk/resources/ces/v1/metric_data.rst
@@ -0,0 +1,13 @@
+otcextensions.sdk.ces.v1.metric_data
+====================================
+
+.. automodule:: otcextensions.sdk.ces.v1.metric_data
+
+The CES Metric Data Class
+-------------------------
+
+The ``Metric Data`` class inherits from
+:class:`~otcextensions.sdk.sdk_resource.Resource`.
+
+.. autoclass:: otcextensions.sdk.ces.v1.metric_data.MetricData
+   :members:
diff --git a/doc/source/sdk/resources/ces/v1/quota.rst b/doc/source/sdk/resources/ces/v1/quota.rst
new file mode 100644
index 000000000..9b777988b
--- /dev/null
+++ b/doc/source/sdk/resources/ces/v1/quota.rst
@@ -0,0 +1,13 @@
+otcextensions.sdk.ces.v1.quota
+==============================
+
+.. automodule:: otcextensions.sdk.ces.v1.quota
+
+The CES Quota Class
+-------------------
+
+The ``Quota`` class inherits from
+:class:`~otcextensions.sdk.sdk_resource.Resource`.
+
+.. autoclass:: otcextensions.sdk.ces.v1.quota.Quota
+   :members:
diff --git a/doc/source/sdk/resources/index.rst b/doc/source/sdk/resources/index.rst
index 6a858cb05..982188c84 100644
--- a/doc/source/sdk/resources/index.rst
+++ b/doc/source/sdk/resources/index.rst
@@ -10,6 +10,7 @@ Open Telekom Cloud Resources
    Anti DDoS Service (Anti-DDoS) <anti_ddos/index>
    AutoScaling Service (AS) <auto_scaling/index>
    Cloud Container Engine (CCE) <cce/index>
+   Cloud Eye Service (CES) <ces/index>
    Cloud Trace Service (CTS) <cts/index>
    Distributed Cache Service (DCS) <dcs/index>
    Dedicated Host Service (DeH) <deh/index>
diff --git a/otcextensions/sdk/ces/v1/_proxy.py b/otcextensions/sdk/ces/v1/_proxy.py
index 9b5bc565b..ab60f2e26 100644
--- a/otcextensions/sdk/ces/v1/_proxy.py
+++ b/otcextensions/sdk/ces/v1/_proxy.py
@@ -37,8 +37,7 @@ def get_alarm(self, alarm):
         """Return a single alarm
 
         :param alarm: The value can be the ID of a alarm or a
-                       :class:`~otcextensions.sdk.ces.v1.alarm.Alarm`
-                        instance.
+            :class:`~otcextensions.sdk.ces.v1.alarm.Alarm` instance.
         :returns: A generator of alarm objects
         :rtype: :class:`~otcextensions.sdk.ces.v1.alarm.Alarm`
         """