diff --git a/core/composer.json b/core/composer.json
index 53ab8fa..862b5a3 100644
--- a/core/composer.json
+++ b/core/composer.json
@@ -94,6 +94,7 @@
         "drupal/editor": "self.version",
         "drupal/entity_reference": "self.version",
         "drupal/field": "self.version",
+        "drupal/field_layout": "self.version",
         "drupal/field_ui": "self.version",
         "drupal/file": "self.version",
         "drupal/filter": "self.version",
diff --git a/core/modules/field_layout/config/schema/field_layout.schema.yml b/core/modules/field_layout/config/schema/field_layout.schema.yml
new file mode 100644
index 0000000..29840c8
--- /dev/null
+++ b/core/modules/field_layout/config/schema/field_layout.schema.yml
@@ -0,0 +1,10 @@
+core.entity_view_display.*.*.*.third_party.field_layout:
+  type: sequence
+  label: 'Per-view mode field layout settings'
+  sequence:
+    type: mapping
+    label: 'Fields'
+    mapping:
+      region:
+        type: string
+        label: 'Region'
diff --git a/core/modules/field_layout/field_layout.info.yml b/core/modules/field_layout/field_layout.info.yml
new file mode 100644
index 0000000..a1951da
--- /dev/null
+++ b/core/modules/field_layout/field_layout.info.yml
@@ -0,0 +1,8 @@
+name: 'Field Layout'
+type: module
+description: '@todo.'
+package: Core (Experimental)
+version: VERSION
+core: 8.x
+dependencies:
+  - field_ui
diff --git a/core/modules/field_layout/field_layout.libraries.yml b/core/modules/field_layout/field_layout.libraries.yml
new file mode 100644
index 0000000..8e3d53e
--- /dev/null
+++ b/core/modules/field_layout/field_layout.libraries.yml
@@ -0,0 +1,10 @@
+drupal.field_layout:
+  version: VERSION
+  js:
+    js/field_layout.js: {}
+  dependencies:
+    - core/jquery
+    - core/jquery.once
+    - core/drupal
+    - core/drupal.form
+    - core/drupalSettings
diff --git a/core/modules/field_layout/field_layout.module b/core/modules/field_layout/field_layout.module
new file mode 100644
index 0000000..f0ef20b
--- /dev/null
+++ b/core/modules/field_layout/field_layout.module
@@ -0,0 +1,89 @@
+<?php
+
+/**
+ * @file
+ * @todo.
+ */
+
+use Drupal\Core\Entity\Display\EntityViewDisplayInterface;
+use Drupal\Core\Entity\EntityInterface;
+use Drupal\Core\Routing\RouteMatchInterface;
+use Drupal\field_layout\Form\FieldLayoutEntityViewDisplayEditForm;
+
+/**
+ * Implements hook_help().
+ */
+function field_layout_help($route_name, RouteMatchInterface $route_match) {
+  switch ($route_name) {
+    case 'help.page.field_layout':
+      $output = '<h3>' . t('About') . '</h3>';
+      $output .= '<p>' . t('@todo.') . '</p>';
+      return $output;
+  }
+}
+
+/**
+ * Implements hook_entity_type_alter().
+ */
+function field_layout_entity_type_alter(array &$entity_types) {
+  /** @var $entity_types \Drupal\Core\Entity\EntityTypeInterface[] */
+  $entity_types['entity_view_display']->setFormClass('edit', FieldLayoutEntityViewDisplayEditForm::class);
+}
+
+/**
+ * @todo.
+ *
+ * @return array
+ */
+function _field_layout_get_layout() {
+  $layouts = [
+    '1col_stacked' => [
+      'label' => t('One column stacked'),
+      'regions' => [
+        'top' => [
+          'label' => t('Top'),
+        ],
+        'bottom' => [
+          'label' => t('Bottom'),
+        ],
+      ],
+    ],
+    '2col' => [
+      'label' => t('Two column'),
+      'regions' => [
+        'left' => [
+          'label' => t('Left'),
+        ],
+        'right' => [
+          'label' => t('Right'),
+        ],
+      ],
+    ],
+  ];
+  return $layouts['1col_stacked'];
+}
+
+/**
+ * Implements hook_entity_view_alter().
+ */
+function field_layout_entity_view_alter(array &$build, EntityInterface $entity, EntityViewDisplayInterface $display) {
+  if (!$field_layout = $display->getThirdPartySettings('field_layout')) {
+    return;
+  }
+
+  // Add the regions to the $build in the correct order.
+  $regions = array_keys(_field_layout_get_layout()['regions']);
+  foreach ($regions as $region) {
+    // @todo Reconsider using region as a wrapper.
+    $build[$region]['#theme_wrappers'][] = 'region';
+    $build[$region]['#region'] = $region;
+  }
+
+  foreach ($display->getComponents() as $name => $component) {
+    if (isset($build[$name]) && isset($field_layout[$name]['region'])) {
+      $region = $field_layout[$name]['region'];
+      $build[$region][$name] = $build[$name];
+      unset($build[$name]);
+    }
+  }
+}
diff --git a/core/modules/field_layout/js/field_layout.js b/core/modules/field_layout/js/field_layout.js
new file mode 100644
index 0000000..810c9b8
--- /dev/null
+++ b/core/modules/field_layout/js/field_layout.js
@@ -0,0 +1,63 @@
+(function ($, Drupal) {
+
+  "use strict";
+
+  /**
+   * Row handlers for the 'Manage display' screen.
+   */
+  Drupal.fieldUIDisplayOverview = Drupal.fieldUIDisplayOverview || {};
+
+  Drupal.fieldUIDisplayOverview.field_layout = function (row, data) {
+    this.row = row;
+    this.name = data.name;
+    this.region = data.region;
+    this.tableDrag = data.tableDrag;
+
+    // Attach change listener to the 'plugin type' select.
+    this.$regionSelect = $(row).find('select.field-layout-region');
+    this.$regionSelect.on('change', Drupal.fieldUIOverview.onChange);
+
+    return this;
+  };
+
+  Drupal.fieldUIDisplayOverview.field_layout.prototype = {
+
+    /**
+     * Returns the region corresponding to the current form values of the row.
+     *
+     * @return {string}
+     *   Either 'hidden' or 'content'.
+     */
+    getRegion: function () {
+      return this.$regionSelect.val();
+    },
+
+    /**
+     * Reacts to a row being changed regions.
+     *
+     * This function is called when the row is moved to a different region, as
+     * a
+     * result of either :
+     * - a drag-and-drop action (the row's form elements then probably need to
+     * be updated accordingly)
+     * - user input in one of the form elements watched by the
+     *   {@link Drupal.fieldUIOverview.onChange} change listener.
+     *
+     * @param {string} region
+     *   The name of the new region for the row.
+     *
+     * @return {object}
+     *   A hash object indicating which rows should be Ajax-updated as a result
+     *   of the change, in the format expected by
+     *   {@link Drupal.fieldUIOverview.AJAXRefreshRows}.
+     */
+    regionChange: function (region) {
+      // Replace dashes with underscores.
+      region = region.replace(/-/g, '_');
+
+      // Set the region of the select list.
+      this.$regionSelect.val(region);
+    }
+  };
+
+})(jQuery, Drupal);
diff --git a/core/modules/field_layout/src/Form/FieldLayoutEntityViewDisplayEditForm.php b/core/modules/field_layout/src/Form/FieldLayoutEntityViewDisplayEditForm.php
new file mode 100644
index 0000000..c593dc5
--- /dev/null
+++ b/core/modules/field_layout/src/Form/FieldLayoutEntityViewDisplayEditForm.php
@@ -0,0 +1,127 @@
+<?php
+
+namespace Drupal\field_layout\Form;
+
+use Drupal\Core\Config\Entity\ThirdPartySettingsInterface;
+use Drupal\Core\Entity\EntityInterface;
+use Drupal\Core\Field\FieldDefinitionInterface;
+use Drupal\Core\Form\FormStateInterface;
+use Drupal\field_ui\Form\EntityViewDisplayEditForm;
+
+/**
+ * @todo.
+ */
+class FieldLayoutEntityViewDisplayEditForm extends EntityViewDisplayEditForm {
+
+  /**
+   * {@inheritdoc}
+   */
+  public function form(array $form, FormStateInterface $form_state) {
+    $form = parent::form($form, $form_state);
+
+    $form['#entity_builders'][] = [static::class, 'updateFieldLayout'];
+
+    $form['#attached']['library'][] = 'field_layout/drupal.field_layout';
+
+    return $form;
+  }
+
+  /**
+   * @todo.
+   *
+   * @param string $entity_type_id
+   * @param \Drupal\Core\Entity\EntityInterface $entity
+   * @param array $form
+   * @param \Drupal\Core\Form\FormStateInterface $form_state
+   */
+  public static function updateFieldLayout($entity_type_id, EntityInterface $entity, &$form, FormStateInterface $form_state) {
+    if ($entity instanceof ThirdPartySettingsInterface) {
+      foreach ($form_state->getValue('fields') as $field_name => $values) {
+        $entity->setThirdPartySetting('field_layout', $field_name, ['region' => $values['region']]);
+      }
+    }
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function getRowRegion($row) {
+    switch ($row['#row_type']) {
+      case 'field':
+      case 'extra_field':
+        return $row['region']['#value'] ?: 'hidden';
+    }
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function getRegions() {
+    $regions = [];
+
+    $layout = _field_layout_get_layout();
+    foreach ($layout['regions'] as $name => $region) {
+      $regions[$name] = [
+        'title' => $region['label'],
+        'message' => $this->t('No field is displayed.')
+      ];
+    }
+
+    $regions['hidden'] = [
+      'title' => $this->t('Disabled', [], ['context' => 'Plural']),
+      'message' => $this->t('No field is hidden.')
+    ];
+
+    return $regions;
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  protected function buildFieldRow(FieldDefinitionInterface $field_definition, array $form, FormStateInterface $form_state) {
+    $row = parent::buildFieldRow($field_definition, $form, $form_state);
+    $row['#js_settings']['rowHandler'] = 'field_layout';
+    return $this->addRegionSelect($row, $field_definition->getName(), $field_definition->getLabel());
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  protected function buildExtraFieldRow($field_id, $extra_field) {
+    $row = parent::buildExtraFieldRow($field_id, $extra_field);
+    $row['#js_settings']['rowHandler'] = 'field_layout';
+    return $this->addRegionSelect($row, $field_id, $extra_field['label']);
+  }
+
+  /**
+   * @todo.
+   */
+  protected function addRegionSelect($row, $field_id, $label) {
+    $field_layout = $this->entity->getThirdPartySetting('field_layout', $field_id, []);
+    $field_layout += ['region' => 'hidden'];
+    $new_row = [
+      'region' => [
+        '#type' => 'select',
+        '#title' => $this->t('Region for @title', ['@title' => $label]),
+        '#title_display' => 'invisible',
+        '#options' => $this->getRegionOptions(),
+        '#empty_value' => 'hidden',
+        '#default_value' => $field_layout['region'],
+        '#attributes' => ['class' => ['field-layout-region']],
+      ],
+    ];
+
+    $position = array_search('parent_wrapper', array_keys($row)) + 1;
+    return array_merge(array_slice($row, 0, $position), $new_row, array_slice($row, $position));
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  protected function getTableHeader() {
+    $header = parent::getTableHeader();
+    array_splice($header, 3, 0, [$this->t('Region')]);
+    return $header;
+  }
+
+}