diff --git a/core/includes/config.inc b/core/includes/config.inc
index 51476b7..c143dd4 100644
--- a/core/includes/config.inc
+++ b/core/includes/config.inc
@@ -91,13 +91,13 @@ function config_sync_get_changes(StorageInterface $source_storage, StorageInterf
   foreach (array_intersect($source_names, $target_names) as $name) {
     $source_config_data = $source_storage->read($name);
     $target_config_data = $target_storage->read($name);
-    if ($source_config_data != $target_config_data) {
+    if ($source_config_data !== $target_config_data) {
       $config_changes['change'][] = $name;
     }
   }
 
   // Do not trigger subsequent synchronization operations if there are no
-  // changes in either category.
+  // changes in any category.
   if (empty($config_changes['create']) && empty($config_changes['change']) && empty($config_changes['delete'])) {
     return FALSE;
   }
@@ -129,6 +129,48 @@ function config_sync_changes(array $config_changes, StorageInterface $source_sto
 }
 
 /**
+ * Imports configuration from FileStorage to DatabaseStorage.
+ *
+ * @return bool|null
+ *   TRUE if configuration was imported successfully, FALSE in case of a
+ *   synchronization error, or NULL if there are no changes to synchronize.
+ */
+function config_import() {
+  // Retrieve a list of differences between FileStorage and DatabaseStorage.
+  // @todo Leverage DI + config.storage.info.
+  $source_storage = new FileStorage();
+  $target_storage = new DatabaseStorage();
+
+  $config_changes = config_sync_get_changes($source_storage, $target_storage);
+  if (empty($config_changes)) {
+    return;
+  }
+
+  if (!lock_acquire(__FUNCTION__)) {
+    // Another request is synchronizing configuration.
+    // Return a negative result for UI purposes. We do not differentiate between
+    // an actual synchronization error and a failed lock, because concurrent
+    // synchronizations are an edge-case happening only when multiple developers
+    // or site builders attempt to do it without coordinating.
+    return FALSE;
+  }
+
+  $success = TRUE;
+  try {
+    $remaining_changes = config_import_invoke_owner($config_changes, $source_storage, $target_storage);
+    config_sync_changes($remaining_changes, $source_storage, $target_storage);
+    // Flush all caches and reset static variables after a successful import.
+    drupal_flush_all_caches();
+  }
+  catch (ConfigException $e) {
+    watchdog_exception('config_import', $e);
+    $success = FALSE;
+  }
+  lock_release(__FUNCTION__);
+  return $success;
+}
+
+/**
  * Invokes MODULE_config_import() callbacks for configuration changes.
  *
  * @param array $config_changes
@@ -176,3 +218,20 @@ function config_import_invoke_owner(array $config_changes, StorageInterface $sou
   }
   return $config_changes;
 }
+
+/**
+ * Exports configuration from DatabaseStorage to FileStorage.
+ */
+function config_export() {
+  // Retrieve a list of differences between DatabaseStorage and FileStorage.
+  // @todo Leverage DI + config.storage.info.
+  $source_storage = new DatabaseStorage();
+  $target_storage = new FileStorage();
+
+  $config_changes = config_sync_get_changes($source_storage, $target_storage);
+  if (empty($config_changes)) {
+    return;
+  }
+  config_sync_changes($config_changes, $source_storage, $target_storage);
+  return TRUE;
+}
diff --git a/core/modules/config/config.admin.inc b/core/modules/config/config.admin.inc
new file mode 100644
index 0000000..6f77bf2
--- /dev/null
+++ b/core/modules/config/config.admin.inc
@@ -0,0 +1,62 @@
+<?php
+
+/**
+ * @file
+ * Admin page callbacks for the config module.
+ */
+
+/**
+ * Form constructor for configuration import form.
+ *
+ * @see config_admin_import_form_submit()
+ */
+function config_admin_import_form($form, &$form_state) {
+  $config_changes = config_import_get_changes();
+
+  if (empty($config_changes)) {
+    $form['no_changes'] = array(
+      '#markup' => t('There are no configuration changes.'),
+    );
+    return $form;
+  }
+
+  foreach ($config_changes as $config_change_type => $config_files) {
+    if (empty($config_files)) {
+      continue;
+    }
+    $form[$config_change_type] = array(
+      '#type' => 'fieldset',
+      '#title' => $config_change_type . ' (' . count($config_files) . ')',
+      '#collapsible' => TRUE,
+    );
+    $form[$config_change_type]['config_files'] = array(
+      '#theme' => 'table',
+      '#header' => array('Name'),
+    );
+    foreach ($config_files as $config_file) {
+      $form[$config_change_type]['config_files']['#rows'][] = array($config_file);
+    }
+  }
+  $form['submit'] = array(
+    '#type' => 'submit',
+    '#value' => t('Import'),
+  );
+  return $form;
+}
+
+/**
+ * Form submission handler for config_admin_import_form().
+ */
+function config_admin_import_form_submit($form, &$form_state) {
+  if (config_import()) {
+    drupal_set_message(t('The configuration was imported successfully.'));
+  }
+  else {
+    // Another request may be synchronizing configuration already. Wait for it
+    // to complete before returning the error, so already synchronized changes
+    // do not appear again.
+    lock_wait(__FUNCTION__);
+    drupal_set_message(t('The import failed due to an error. Any errors have been logged.'), 'error');
+  }
+}
+
diff --git a/core/modules/config/config.module b/core/modules/config/config.module
index b3d9bbc..3d4fcfe 100644
--- a/core/modules/config/config.module
+++ b/core/modules/config/config.module
@@ -1 +1,33 @@
 <?php
+
+/**
+ * @file
+ * Allows site administrators to modify configuration.
+ */
+
+/**
+ * Implements hook_permission().
+ */
+function config_permission() {
+  $permissions['import configuration'] = array(
+    'title' => t('Import configuration'),
+    'restrict access' => TRUE,
+  );
+  return $permissions;
+}
+
+/**
+ * Implements hook_menu().
+ */
+function config_menu() {
+  $items['admin/config/development/import'] = array(
+    'title' => 'Import configuration',
+    'description' => 'Import and synchronize configuration changes.',
+    'page callback' => 'drupal_get_form',
+    'page arguments' => array('config_admin_import_form'),
+    'access arguments' => array('import configuration'),
+    'file' => 'config.admin.inc',
+  );
+  return $items;
+}
+
diff --git a/core/modules/config/lib/Drupal/config/Tests/ConfigImportTest.php b/core/modules/config/lib/Drupal/config/Tests/ConfigImportTest.php
new file mode 100644
index 0000000..a6e72b4
--- /dev/null
+++ b/core/modules/config/lib/Drupal/config/Tests/ConfigImportTest.php
@@ -0,0 +1,138 @@
+<?php
+
+/**
+ * @file
+ * Definition of Drupal\config\Tests\ConfigImportTest.
+ */
+
+namespace Drupal\config\Tests;
+
+use Drupal\Core\Config\DatabaseStorage;
+use Drupal\Core\Config\FileStorage;
+use Drupal\simpletest\WebTestBase;
+
+/**
+ * Tests importing configuration from files into active store.
+ */
+class ConfigImportTest extends WebTestBase {
+  public static function getInfo() {
+    return array(
+      'name' => 'Import configuration',
+      'description' => 'Tests importing configuration from files into active store.',
+      'group' => 'Configuration',
+    );
+  }
+
+  function setUp() {
+    parent::setUp(array('config_test'));
+  }
+
+  /**
+   * Tests deletion of configuration during import.
+   */
+  function testDeleted() {
+    $name = 'config_test.system';
+    $dynamic_name = 'config_test.dynamic.default';
+
+    // Verify the default configuration values exist.
+    $config = config($name);
+    $this->assertIdentical($config->get('foo'), 'bar');
+    $config = config($dynamic_name);
+    $this->assertIdentical($config->get('id'), 'default');
+
+    // Export.
+    config_export();
+
+    // Delete the configuration objects.
+    $file_storage = new FileStorage();
+    $file_storage->delete($name);
+    $file_storage->delete($dynamic_name);
+
+    // Import.
+    config_import();
+
+    // Verify the values have disappeared.
+    $database_storage = new DatabaseStorage();
+    $this->assertIdentical($database_storage->read($name), FALSE);
+    $this->assertIdentical($database_storage->read($dynamic_name), FALSE);
+
+    $config = config($name);
+    $this->assertIdentical($config->get('foo'), NULL);
+    $config = config($dynamic_name);
+    $this->assertIdentical($config->get('id'), NULL);
+  }
+
+  /**
+   * Tests creation of configuration during import.
+   */
+  function testNew() {
+    $name = 'config_test.new';
+    $dynamic_name = 'config_test.dynamic.new';
+
+    // Verify the configuration to create does not exist yet.
+    $file_storage = new FileStorage();
+    $this->assertIdentical($file_storage->exists($name), FALSE, $name . ' not found.');
+    $this->assertIdentical($file_storage->exists($dynamic_name), FALSE, $dynamic_name . ' not found.');
+
+    // Export.
+    config_export();
+
+    // Create new configuration objects.
+    $file_storage->write($name, array(
+      'add_me' => 'new value',
+    ));
+    $file_storage->write($dynamic_name, array(
+      'id' => 'new',
+      'label' => 'New',
+    ));
+    $this->assertIdentical($file_storage->exists($name), TRUE, $name . ' found.');
+    $this->assertIdentical($file_storage->exists($dynamic_name), TRUE, $dynamic_name . ' found.');
+
+    // Import.
+    config_import();
+
+    // Verify the values appeared.
+    $config = config($name);
+    $this->assertIdentical($config->get('add_me'), 'new value');
+    $config = config($dynamic_name);
+    $this->assertIdentical($config->get('label'), 'New');
+  }
+
+  /**
+   * Tests updating of configuration during import.
+   */
+  function testUpdated() {
+    $name = 'config_test.system';
+    $dynamic_name = 'config_test.dynamic.default';
+
+    // Export.
+    config_export();
+
+    // Replace the file content of the existing configuration objects.
+    $file_storage = new FileStorage();
+    $this->assertIdentical($file_storage->exists($name), TRUE, $name . ' found.');
+    $this->assertIdentical($file_storage->exists($dynamic_name), TRUE, $dynamic_name . ' found.');
+    $file_storage->write($name, array(
+      'foo' => 'beer',
+    ));
+    $file_storage->write($dynamic_name, array(
+      'id' => 'default',
+      'label' => 'Updated',
+    ));
+
+    // Verify the active store still returns the default values.
+    $config = config($name);
+    $this->assertIdentical($config->get('foo'), 'bar');
+    $config = config($dynamic_name);
+    $this->assertIdentical($config->get('label'), 'Default');
+
+    // Import.
+    config_import();
+
+    // Verify the values were updated.
+    $config = config($name);
+    $this->assertIdentical($config->get('foo'), 'beer');
+    $config = config($dynamic_name);
+    $this->assertIdentical($config->get('label'), 'Updated');
+  }
+}
diff --git a/core/modules/config/tests/config_test/config/config_test.delete.yml b/core/modules/config/tests/config_test/config/config_test.delete.yml
new file mode 100644
index 0000000..b8ccb67
--- /dev/null
+++ b/core/modules/config/tests/config_test/config/config_test.delete.yml
@@ -0,0 +1 @@
+delete_me: bar