diff --git a/doc/reference/reference_lua/config.rst b/doc/reference/reference_lua/config.rst
index fd6ce0753..6039e9c0c 100644
--- a/doc/reference/reference_lua/config.rst
+++ b/doc/reference/reference_lua/config.rst
@@ -523,3 +523,9 @@ The ``config.storage`` API allows you to interact with a Tarantool-based :ref:`c
         :dedent:
 
     Example on GitHub: `tarantool_config_storage <https://github.com/tarantool/doc/tree/latest/doc/code_snippets/snippets/centralized_config/instances.enabled/tarantool_config_storage>`_
+
+.. toctree::
+    :maxdepth: 1
+    :includehidden:
+
+    config/utils_schema
diff --git a/doc/reference/reference_lua/config/utils_schema.rst b/doc/reference/reference_lua/config/utils_schema.rst
new file mode 100644
index 000000000..1c858590b
--- /dev/null
+++ b/doc/reference/reference_lua/config/utils_schema.rst
@@ -0,0 +1,672 @@
+..  _config_utils_schema_module:
+
+Submodule experimental.config.utils.schema
+==========================================
+
+**Since:** :doc:`3.2.0 </release/3.2.0>`
+
+Tarantool allows you to provide arbitrary configurations for cluster applications:
+
+-   For applications loaded using the :ref:`app <configuration_reference_app>` option, :ref:`app.cfg <configuration_reference_app_cfg>` is used to provide a configuration.
+-   For :ref:`custom roles <application_roles>` developed as a part of a cluster application, :ref:`roles_cfg <configuration_reference_roles_cfg>` is used.
+
+The ``experimental.config.utils.schema`` module provides the ability to validate such configurations and process their data: get and set configuration values, filter and transform configuration data, and so on.
+
+..  important::
+
+    ``experimental.config.utils.schema`` is an experimental submodule and is subject to changes.
+
+
+
+
+.. _config_utils_schema_getting_started:
+
+Getting started with config.utils.schema
+----------------------------------------
+
+Example config - scalar type:
+
+..  literalinclude:: /code_snippets/snippets/config/instances.enabled/application_validate_cfg_scalar/config.yaml
+    :language: yaml
+    :start-at: roles
+    :dedent:
+
+1.  Load the module:
+
+    ..  literalinclude:: /code_snippets/snippets/config/instances.enabled/application_validate_cfg_scalar/http_api.lua
+        :language: lua
+        :start-at: config.utils.schema
+        :end-at: config.utils.schema
+        :dedent:
+
+2.  Define a schema using :ref:`config.utils.schema.new() <config-utils-schema-new>`.
+    Example enum:
+
+    ..  literalinclude:: /code_snippets/snippets/config/instances.enabled/application_validate_cfg_scalar/http_api.lua
+        :language: lua
+        :start-at: local http_api_schema
+        :end-before: local function validate
+        :dedent:
+
+3.  Validate config values using ``config.utils.schema.validate()``.
+    For a role, inside the ``validate()`` func:
+
+    ..  literalinclude:: /code_snippets/snippets/config/instances.enabled/application_validate_cfg_scalar/http_api.lua
+        :language: lua
+        :start-at: local function validate
+        :end-before: local function apply
+        :dedent:
+
+4.  Get value. For a role, inside the ``apply()`` func:
+
+    ..  literalinclude:: /code_snippets/snippets/config/instances.enabled/application_validate_cfg_scalar/http_api.lua
+        :language: lua
+        :start-at: local function apply
+        :end-before: local function stop
+        :dedent:
+
+
+
+.. _config_utils_schema_definition:
+
+Schema definition
+-----------------
+
+Create using :ref:`config.utils.schema.new() <config-utils-schema-new>`. Options:
+
+-   schema name
+-   schema node:
+
+    -   scalar and composite (record, array, map) types
+    -   annotations (type, validate, and so on)
+
+-   (optional) methods
+
+.. _config_utils_schema_nodes:
+
+Schema nodes
+~~~~~~~~~~~~
+
+.. _config_utils_schema_scalar_composite_types:
+
+Scalar and composite types
+**************************
+
+There are scalar and composite types.
+
+-   :ref:`config.utils.schema.scalar() <config-utils-schema-scalar>`
+-   :ref:`config.utils.schema.record() <config-utils-schema-record>`
+-   :ref:`config.utils.schema.map() <config-utils-schema-map>`
+-   :ref:`config.utils.schema.array() <config-utils-schema-array>`
+
+Shortcuts:
+
+-   :ref:`config.utils.schema.enum() <config-utils-schema-enum>`
+-   :ref:`config.utils.schema.set() <config-utils-schema-set>`
+
+.. _config_utils_schema_type_system_scalar:
+
+Scalar
+^^^^^^
+
+:ref:`config.utils.schema.scalar() <config-utils-schema-scalar>`
+
+Example config - scalar type:
+
+..  literalinclude:: /code_snippets/snippets/config/instances.enabled/application_validate_cfg_scalar/config.yaml
+    :language: yaml
+    :start-at: roles
+    :dedent:
+
+Schema definition:
+
+..  literalinclude:: /code_snippets/snippets/config/instances.enabled/application_validate_cfg_scalar/http_api.lua
+    :language: lua
+    :start-at: local http_api_schema
+    :end-before: local function validate
+    :dedent:
+
+See also: :ref:`config_utils_schema_annotation`.
+
+
+
+.. _record:
+
+Record
+^^^^^^
+
+Example config:
+
+..  literalinclude:: /code_snippets/snippets/config/instances.enabled/application_validate_cfg_record/config.yaml
+    :language: yaml
+    :start-at: roles
+    :dedent:
+
+Schema:
+
+..  literalinclude:: /code_snippets/snippets/config/instances.enabled/application_validate_cfg_record/http_api.lua
+    :language: lua
+    :start-at: local listen_address_schema
+    :end-before: local function validate
+    :dedent:
+
+.. _array_record:
+
+Array
+^^^^^
+
+Also: :ref:`config.utils.schema.set() <config-utils-schema-set>`
+
+Example config:
+
+..  literalinclude:: /code_snippets/snippets/config/instances.enabled/application_validate_cfg_array_record/config.yaml
+    :language: yaml
+    :start-at: roles
+    :dedent:
+
+Schema:
+
+..  literalinclude:: /code_snippets/snippets/config/instances.enabled/application_validate_cfg_array_record/http-api.lua
+    :language: lua
+    :start-at: local listen_address_schema
+    :end-before: local function validate
+    :dedent:
+
+.. _record_map:
+
+Map
+^^^
+
+Example config:
+
+..  literalinclude:: /code_snippets/snippets/config/instances.enabled/application_validate_cfg_record_map/config.yaml
+    :language: yaml
+    :start-at: roles
+    :dedent:
+
+Schema:
+
+..  literalinclude:: /code_snippets/snippets/config/instances.enabled/application_validate_cfg_record_map/http_api.lua
+    :language: lua
+    :start-at: local listen_address_schema
+    :end-before: local function validate
+    :dedent:
+
+
+.. _config_utils_schema_annotation:
+
+Annotations
+***********
+
+-   ``type`` (string)
+-   (optional) ``validate`` (function)
+-   (optional) ``allowed_values`` (table)
+-   (optional) ``default`` (any)
+-   (optional) ``apply_default_if`` (function)
+-   (optional) custom annotations
+
+.. _config_utils_schema_type_annotation:
+
+Type annotation
+^^^^^^^^^^^^^^^
+
+The ``type`` annotation. Supported types:
+
+-   ``string`` -- ``string``
+-   ``number`` -- ``number``
+-   ``integer``	-- ``number``
+-   ``boolean``	-- ``boolean``
+-   ``any``	-  any accepts an arbitrary Lua type, including ``table``. A scalar of the ``any`` type may be used to declare an arbitrary value that doesn't need any validation.
+-   ``string, number`` -- ``string`` or ``number``
+-   ``number, string`` -- ``string`` or ``string``
+
+
+.. _config_utils_schema_validate_annotation:
+
+Validate annotation
+^^^^^^^^^^^^^^^^^^^
+
+Example config:
+
+..  literalinclude:: /code_snippets/snippets/config/instances.enabled/application_validate_cfg_record_annotations/config.yaml
+    :language: yaml
+    :start-at: roles
+    :dedent:
+
+Schema definition (``validate``, ``allowed_values``, ``default``):
+
+..  literalinclude:: /code_snippets/snippets/config/instances.enabled/application_validate_cfg_record_annotations/http_api.lua
+    :language: lua
+    :start-at: local listen_address_schema
+    :end-before: local function validate
+    :dedent:
+
+Validate functions:
+
+..  literalinclude:: /code_snippets/snippets/config/instances.enabled/application_validate_cfg_record_annotations/http_api.lua
+    :language: lua
+    :start-at: local function validate_host
+    :end-before: local listen_address_schema
+    :dedent:
+
+
+
+
+.. _config_utils_schema_custom_annotations:
+
+Custom annotations
+^^^^^^^^^^^^^^^^^^
+
+``env``:
+
+..  literalinclude:: /code_snippets/snippets/config/instances.enabled/application_validate_cfg_record_fromenv/http_api.lua
+    :language: lua
+    :start-at: local listen_address_schema
+    :end-before: local function collect_env_cfg
+    :dedent:
+
+Learn more about getting env vars: :ref:`config_utils_schema_env-vars`.
+
+
+.. _config_utils_schema_computed_annotations:
+
+Computed annotations
+^^^^^^^^^^^^^^^^^^^^
+
+Schema node:
+
+..  literalinclude:: /code_snippets/snippets/config/instances.enabled/application_validate_cfg_record_computed_annotations/api.lua
+    :language: lua
+    :start-at: local listen_address
+    :end-before: local http_listen_address_schema
+    :dedent:
+
+Valid schema:
+
+..  literalinclude:: /code_snippets/snippets/config/instances.enabled/application_validate_cfg_record_computed_annotations/api.lua
+    :language: lua
+    :start-at: local http_listen_address_schema
+    :end-before: local iproto_listen_address_schema
+    :dedent:
+
+Invalid schema:
+
+..  literalinclude:: /code_snippets/snippets/config/instances.enabled/application_validate_cfg_record_computed_annotations/api.lua
+    :language: lua
+    :start-at: local iproto_listen_address_schema
+    :end-before: local function validate
+    :dedent:
+
+
+
+.. _config_utils_schema_methods:
+
+User-defined methods
+~~~~~~~~~~~~~~~~~~~~
+
+Example config:
+
+..  literalinclude:: /code_snippets/snippets/config/instances.enabled/application_validate_cfg_record_methods/config.yaml
+    :language: yaml
+    :start-at: roles
+    :dedent:
+
+Schema:
+
+..  literalinclude:: /code_snippets/snippets/config/instances.enabled/application_validate_cfg_record_methods/http_api.lua
+    :language: lua
+    :start-at: local listen_address_schema
+    :end-before: local function validate
+    :dedent:
+
+
+
+
+
+.. _config_utils_schema_process_data:
+
+Processing configuration data
+-----------------------------
+
+.. _config_utils_schema_validating_configuration:
+
+Validating configuration
+~~~~~~~~~~~~~~~~~~~~~~~~
+
+TODO
+
+.. _config_utils_schema_get_configuration:
+
+Getting configuration values
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+TODO (scalar, record, array, map)
+
+.. _config_utils_schema_env-vars:
+
+Parsing environment variables
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+TODO
+
+
+.. _api-reference-config-utils-schema:
+
+API Reference
+-------------
+
+..  container:: table
+
+    ..  rst-class:: left-align-column-1
+    ..  rst-class:: left-align-column-2
+
+    ..  list-table::
+        :widths: 45 55
+
+        *   -   **Functions**
+            -
+
+        *   -   :ref:`config.utils.schema.array() <config-utils-schema-array>`
+            -   TODO
+
+        *   -   :ref:`config.utils.schema.enum() <config-utils-schema-enum>`
+            -   TODO
+
+        *   -   :ref:`config.utils.schema.fromenv() <config-utils-schema-fromenv>`
+            -   TODO
+
+        *   -   :ref:`config.utils.schema.map() <config-utils-schema-map>`
+            -   TODO
+
+        *   -   :ref:`config.utils.schema.new() <config-utils-schema-new>`
+            -   TODO
+
+        *   -   :ref:`config.utils.schema.record() <config-utils-schema-record>`
+            -   TODO
+
+        *   -   :ref:`config.utils.schema.scalar() <config-utils-schema-scalar>`
+            -   TODO
+
+        *   -   :ref:`config.utils.schema.set() <config-utils-schema-set>`
+            -   TODO
+
+        *   -   **schema_object**
+            -
+
+        *   -   :ref:`schema_object:apply_default() <config-schema_object-apply_default>`
+            -   TODO
+
+        *   -   :ref:`schema_object:filter() <config-schema_object-filter>`
+            -   TODO
+
+        *   -   :ref:`schema_object:get() <config-schema_object-get>`
+            -   TODO
+
+        *   -   :ref:`schema_object:map() <config-schema_object-map>`
+            -   TODO
+
+        *   -   :ref:`schema_object.methods <config-schema_object-methods>`
+            -   TODO
+
+        *   -   :ref:`schema_object.name <config-schema_object-name>`
+            -   TODO
+
+        *   -   :ref:`schema_object:merge() <config-schema_object-merge>`
+            -   TODO
+
+        *   -   :ref:`schema_object:pairs() <config-schema_object-pairs>`
+            -   TODO
+
+        *   -   :ref:`schema_object:set() <config-schema_object-set>`
+            -   TODO
+
+        *   -   :ref:`schema_object.schema <config-schema_object-schema>`
+            -   TODO
+
+        *   -   :ref:`schema_object:validate() <config-schema_object-validate>`
+            -   TODO
+
+        *   -   **schema_node_annotation**
+            -
+
+        *   -   :ref:`schema_node_annotation.allowed_values <config-schema_node_annotation-allowed_values>`
+            -   TODO
+
+        *   -   :ref:`schema_node_annotation.apply_default_if <config-schema_node_annotation-apply_default_if>`
+            -   TODO
+
+        *   -   :ref:`schema_node_annotation.default <config-schema_node_annotation-default>`
+            -   TODO
+
+        *   -   :ref:`schema_node_annotation.type <config-schema_node_annotation-type>`
+            -   TODO
+
+        *   -   :ref:`schema_node_annotation.validate <config-schema_node_annotation-validate>`
+            -   TODO
+
+        *   -   **schema_node_object**
+            -
+
+        *   -   :ref:`schema_node_object.computed.annotations <config-schema_node_object-computed-annotations>`
+            -   TODO
+
+        *   -   :ref:`schema_node_object.fields <config-schema_node_object-fields>`
+            -   TODO
+
+        *   -   :ref:`schema_node_object.type <config-schema_node_object-type>`
+            -   TODO
+
+
+
+
+
+
+
+
+..  _config-utils-schema_functions:
+
+Functions
+~~~~~~~~~
+
+..  module:: config.utils.schema
+
+..  _config-utils-schema-array:
+
+..  function:: schema.array()
+
+    TODO
+
+..  _config-utils-schema-enum:
+
+..  function:: schema.enum()
+
+    TODO
+
+..  _config-utils-schema-fromenv:
+
+..  function:: schema.fromenv()
+
+    TODO
+
+..  _config-utils-schema-map:
+
+..  function:: schema.map()
+
+    TODO
+
+..  _config-utils-schema-new:
+
+..  function:: schema.new(schema_name, schema_node[, { methods = <...> }])
+
+    Create a schema object.
+
+    :param string schema_name: a name
+    :param table schema_node: a node
+    :param table methods: methods
+
+    :return: a new schema instance (see :ref:`schema_object <config-utils-schema_object>`)
+    :rtype:  userdata
+
+
+..  _config-utils-schema-record:
+
+..  function:: schema.record()
+
+    TODO
+
+..  _config-utils-schema-scalar:
+
+..  function:: schema.scalar()
+
+    TODO
+
+..  _config-utils-schema-set:
+
+..  function:: schema.set()
+
+    TODO
+
+----
+
+
+..  _config-utils-schema_object:
+
+schema_object
+~~~~~~~~~~~~~
+
+..  class:: schema_object
+
+    ..  _config-schema_object-apply_default:
+
+    ..  method:: apply_default(data)
+
+        Apply default values.
+
+        :param any data: data
+
+        :return: new data
+
+    ..  _config-schema_object-filter:
+
+    ..  method:: filter()
+
+        TODO
+
+    ..  _config-schema_object-get:
+
+    ..  method:: get()
+
+        TODO
+
+    ..  _config-schema_object-map:
+
+    ..  method:: map()
+
+        TODO
+
+    ..  _config-schema_object-methods:
+
+    ..  method:: methods()
+
+        TODO
+
+    ..  _config-schema_object-name:
+
+    ..  data:: name
+
+        TODO
+
+    ..  _config-schema_object-merge:
+
+    ..  method:: merge()
+
+        TODO
+
+    ..  _config-schema_object-pairs:
+
+    ..  method:: pairs()
+
+        TODO
+
+    ..  _config-schema_object-set:
+
+    ..  method:: set()
+
+        TODO
+
+    ..  _config-schema_object-schema:
+
+    ..  data:: schema
+
+        TODO
+
+    ..  _config-schema_object-validate:
+
+    ..  method:: validate()
+
+        TODO
+
+
+
+
+
+..  _config-utils-schema_node_annotation:
+
+schema_node_annotation
+~~~~~~~~~~~~~~~~~~~~~~
+
+..  _config-schema_node_annotation-allowed_values:
+
+..  data:: allowed_values
+
+    TODO
+
+..  _config-schema_node_annotation-apply_default_if:
+
+..  data:: apply_default_if
+
+    TODO
+
+..  _config-schema_node_annotation-default:
+
+..  data:: default
+
+    TODO
+
+..  _config-schema_node_annotation-type:
+
+..  data:: type
+
+    TODO
+
+..  _config-schema_node_annotation-validate:
+
+..  data:: validate
+
+    TODO
+
+
+..  _config-utils-schema_node_object:
+
+schema_node_object
+~~~~~~~~~~~~~~~~~~
+
+..  class:: schema_node_object
+
+    ..  _config-schema_node_object-computed-annotations:
+
+    ..  data:: computed.annotations
+
+        TODO
+
+    ..  _config-schema_node_object-fields:
+
+    ..  data:: fields
+
+        TODO
+
+    ..  _config-schema_node_object-type:
+
+    ..  data:: type
+
+        TODO