diff --git a/core/modules/system/language.api.php b/core/modules/system/language.api.php
index fb165a4..24e4d0f 100644
--- a/core/modules/system/language.api.php
+++ b/core/modules/system/language.api.php
@@ -191,7 +191,7 @@ function hook_language_fallback_candidates_alter(array &$fallback_candidates) {
  * // Use the current default interface language.
  * $langcode = language(\Drupal\Core\Language\Language::TYPE_INTERFACE)->langcode;
  * // Instantiate the transliteration class.
- * $trans = drupal_container()->get('transliteration');
+ * $trans = Drupal::service('transliteration');
  * // Use this to transliterate some text.
  * $transformed = $trans->transliterate($string, $langcode);
  * @endcode
diff --git a/core/modules/system/lib/Drupal/system/Plugin/PluginUIBase.php b/core/modules/system/lib/Drupal/system/Plugin/PluginUIBase.php
index dd890fd..a51c3c1 100644
--- a/core/modules/system/lib/Drupal/system/Plugin/PluginUIBase.php
+++ b/core/modules/system/lib/Drupal/system/Plugin/PluginUIBase.php
@@ -27,7 +27,7 @@ public function form($form, &$form_state) {
       $manager = new $plugin_definition['manager']();
     }
     else {
-      $manager = drupal_container()->get($plugin_definition['manager']);
+      $manager = Drupal::service($plugin_definition['manager']);
     }
     $plugins = $manager->getDefinitions();
 
diff --git a/core/modules/system/lib/Drupal/system/Tests/Common/JavaScriptTest.php b/core/modules/system/lib/Drupal/system/Tests/Common/JavaScriptTest.php
index 0a457a6..8ed1ea1 100644
--- a/core/modules/system/lib/Drupal/system/Tests/Common/JavaScriptTest.php
+++ b/core/modules/system/lib/Drupal/system/Tests/Common/JavaScriptTest.php
@@ -7,6 +7,7 @@
 
 namespace Drupal\system\Tests\Common;
 
+use Drupal;
 use Drupal\simpletest\WebTestBase;
 
 /**
@@ -200,7 +201,7 @@ function testHeaderSetting() {
     $this->drupalGet('common-test/query-string');
     $this->assertPattern('@<script>.+drupalSettings.+"currentPath":"common-test\\\/query-string"@s', 'currentPath is in the JS settings');
     $path = array('source' => 'common-test/query-string', 'alias' => 'common-test/currentpath-check');
-    drupal_container()->get('path.crud')->save($path['source'], $path['alias']);
+    Drupal::service('path.crud')->save($path['source'], $path['alias']);
     $this->drupalGet('common-test/currentpath-check');
     $this->assertPattern('@<script>.+drupalSettings.+"currentPath":"common-test\\\/query-string"@s', 'currentPath is in the JS settings for an aliased path');
   }
diff --git a/core/modules/system/lib/Drupal/system/Tests/Path/UrlAlterFunctionalTest.php b/core/modules/system/lib/Drupal/system/Tests/Path/UrlAlterFunctionalTest.php
index eef40d4..c5f189a 100644
--- a/core/modules/system/lib/Drupal/system/Tests/Path/UrlAlterFunctionalTest.php
+++ b/core/modules/system/lib/Drupal/system/Tests/Path/UrlAlterFunctionalTest.php
@@ -7,6 +7,7 @@
 
 namespace Drupal\system\Tests\Path;
 
+use Drupal;
 use Drupal\simpletest\WebTestBase;
 
 /**
@@ -112,7 +113,7 @@ protected function assertUrlOutboundAlter($original, $final) {
    *
    * @param $original
    *   A string with the aliased or un-normal path that is run through
-   *   drupal_container()->get('path.alias_manager')->getSystemPath().
+   *   Drupal::service('path.alias_manager')->getSystemPath().
    * @param $final
    *   A string with the expected result after url().
    * @return
@@ -120,7 +121,7 @@ protected function assertUrlOutboundAlter($original, $final) {
    */
   protected function assertUrlInboundAlter($original, $final) {
     // Test inbound altering.
-    $result = drupal_container()->get('path.alias_manager')->getSystemPath($original);
+    $result = Drupal::service('path.alias_manager')->getSystemPath($original);
     $this->assertIdentical($result, $final, format_string('Altered inbound URL %original, expected %final, and got %result.', array('%original' => $original, '%final' => $final, '%result' => $result)));
   }
 }
diff --git a/core/modules/system/lib/Drupal/system/Tests/Theme/TwigSettingsTest.php b/core/modules/system/lib/Drupal/system/Tests/Theme/TwigSettingsTest.php
index f50f110..8bc009a 100644
--- a/core/modules/system/lib/Drupal/system/Tests/Theme/TwigSettingsTest.php
+++ b/core/modules/system/lib/Drupal/system/Tests/Theme/TwigSettingsTest.php
@@ -7,6 +7,7 @@
 
 namespace Drupal\system\Tests\Theme;
 
+use Drupal;
 use Drupal\simpletest\WebTestBase;
 use Drupal\Component\PhpStorage\PhpStorageFactory;
 
@@ -39,13 +40,13 @@ function testTwigAutoReloadOverride() {
     $this->rebuildContainer();
 
     // Check isAutoReload() via the Twig service container.
-    $this->assertTrue(drupal_container()->get('twig')->isAutoReload(), 'Automatic reloading of Twig templates enabled.');
+    $this->assertTrue(Drupal::service('twig')->isAutoReload(), 'Automatic reloading of Twig templates enabled.');
 
     // Disable auto reload and check the service container again.
     $this->settingsSet('twig_auto_reload', FALSE);
     $this->rebuildContainer();
 
-    $this->assertFalse(drupal_container()->get('twig')->isAutoReload(), 'Automatic reloading of Twig templates disabled.');
+    $this->assertFalse(Drupal::service('twig')->isAutoReload(), 'Automatic reloading of Twig templates disabled.');
   }
 
   /**
@@ -57,19 +58,19 @@ function testTwigDebugOverride() {
     $this->rebuildContainer();
 
     // Check isDebug() via the Twig service container.
-    $this->assertTrue(drupal_container()->get('twig')->isDebug(), 'Twig debug enabled.');
-    $this->assertTrue(drupal_container()->get('twig')->isAutoReload(), 'Twig automatic reloading is enabled when debug is enabled.');
+    $this->assertTrue(Drupal::service('twig')->isDebug(), 'Twig debug enabled.');
+    $this->assertTrue(Drupal::service('twig')->isAutoReload(), 'Twig automatic reloading is enabled when debug is enabled.');
 
     // Override auto reload when debug is enabled.
     $this->settingsSet('twig_auto_reload', FALSE);
     $this->rebuildContainer();
-    $this->assertFalse(drupal_container()->get('twig')->isAutoReload(), 'Twig automatic reloading can be disabled when debug is enabled.');
+    $this->assertFalse(Drupal::service('twig')->isAutoReload(), 'Twig automatic reloading can be disabled when debug is enabled.');
 
     // Disable debug and check the service container again.
     $this->settingsSet('twig_debug', FALSE);
     $this->rebuildContainer();
 
-    $this->assertFalse(drupal_container()->get('twig')->isDebug(), 'Twig debug disabled.');
+    $this->assertFalse(Drupal::service('twig')->isDebug(), 'Twig debug disabled.');
   }
 
   /**
@@ -94,7 +95,7 @@ function testTwigCacheOverride() {
     // Get the template filename and the cache filename for
     // theme_test.template_test.html.twig.
     $template_filename = $templates['theme_test_template_test']['path'] . '/' . $templates['theme_test_template_test']['template'] . $extension;
-    $cache_filename = drupal_container()->get('twig')->getCacheFilename($template_filename);
+    $cache_filename = Drupal::service('twig')->getCacheFilename($template_filename);
 
     // Navigate to the page and make sure the template gets cached.
     $this->drupalGet('theme-test/template-test');
@@ -105,7 +106,7 @@ function testTwigCacheOverride() {
     $this->rebuildContainer();
 
     // This should return false after rebuilding the service container.
-    $new_cache_filename = drupal_container()->get('twig')->getCacheFilename($template_filename);
+    $new_cache_filename = Drupal::service('twig')->getCacheFilename($template_filename);
     $this->assertFalse($new_cache_filename, 'Twig environment does not return cache filename after caching is disabled.');
   }
 
diff --git a/core/modules/system/lib/Drupal/system/Tests/Update/UpdateScriptTest.php b/core/modules/system/lib/Drupal/system/Tests/Update/UpdateScriptTest.php
index b0e255e..8e1c2ff 100644
--- a/core/modules/system/lib/Drupal/system/Tests/Update/UpdateScriptTest.php
+++ b/core/modules/system/lib/Drupal/system/Tests/Update/UpdateScriptTest.php
@@ -7,6 +7,7 @@
 
 namespace Drupal\system\Tests\Update;
 
+use Drupal;
 use Drupal\simpletest\WebTestBase;
 
 /**
@@ -63,7 +64,7 @@ function testUpdateAccess() {
     // Access the update page as user 1.
     $user1 = user_load(1);
     $user1->pass_raw = user_password();
-    $user1->pass = drupal_container()->get('password')->hash(trim($user1->pass_raw));
+    $user1->pass = Drupal::service('password')->hash(trim($user1->pass_raw));
     db_query("UPDATE {users} SET pass = :pass WHERE uid = :uid", array(':pass' => $user1->pass, ':uid' => $user1->uid));
     $this->drupalLogin($user1);
     $this->drupalGet($this->update_url, array('external' => TRUE));
diff --git a/core/modules/system/system.install b/core/modules/system/system.install
index 84d7bcd..5229e16 100644
--- a/core/modules/system/system.install
+++ b/core/modules/system/system.install
@@ -1927,7 +1927,7 @@ function system_update_8046() {
     $config_name = 'views.view.frontpage';
     $module_config_path = drupal_get_path('module', $module) . '/config';
     $module_filestorage = new FileStorage($module_config_path);
-    $config_storage = drupal_container()->get('config.storage');
+    $config_storage = Drupal::service('config.storage');
     // If this file already exists, something in the upgrade path went
     // completely wrong and we want to know.
     if ($config_storage->exists($config_name)) {
diff --git a/core/modules/system/system.module b/core/modules/system/system.module
index 185827e..bc2bf8f 100644
--- a/core/modules/system/system.module
+++ b/core/modules/system/system.module
@@ -1011,7 +1011,7 @@ function system_menu() {
     );
   }
 
-  foreach (drupal_container()->get('plugin.manager.system.plugin_ui')->getDefinitions() as $plugin_id => $plugin) {
+  foreach (Drupal::service('plugin.manager.system.plugin_ui')->getDefinitions() as $plugin_id => $plugin) {
     if ($plugin['menu'] === TRUE) {
       $items[$plugin['path'] . '/' . $plugin_id . '/' . $plugin['suffix']] = array(
         'title' => $plugin['title'],
@@ -1064,7 +1064,7 @@ function system_menu() {
  *   documentation. Also "proxies" is a weird word to use.
  */
 function system_plugin_ui_form($form, &$form_state, $plugin, $facet = NULL) {
-  $plugin_ui = drupal_container()->get('plugin.manager.system.plugin_ui')->createInstance($plugin);
+  $plugin_ui = Drupal::service('plugin.manager.system.plugin_ui')->createInstance($plugin);
   $form = $plugin_ui->form($form, $form_state, $facet);
   $form['#validate'][] = array($plugin_ui, 'formValidate');
   $form['#submit'][] = array($plugin_ui, 'formSubmit');
@@ -1085,7 +1085,7 @@ function system_plugin_ui_form($form, &$form_state, $plugin, $facet = NULL) {
  * @return object JsonResponse
  */
 function system_plugin_autocomplete($plugin_id) {
-  $string_typed = drupal_container()->get('request')->query->get('q');
+  $string_typed = Drupal::request()->query->get('q');
   $string_typed = drupal_explode_tags($string_typed);
   $string = drupal_strtolower(array_pop($string_typed));
   $matches = array();
@@ -1109,7 +1109,7 @@ function system_plugin_autocomplete($plugin_id) {
  * @todo What the heck kind of parameter name is "facet"?
  */
 function system_plugin_ui_access($plugin, $facet = NULL) {
-  $plugin_ui = drupal_container()->get('plugin.manager.system.plugin_ui')->createInstance($plugin);
+  $plugin_ui = Drupal::service('plugin.manager.system.plugin_ui')->createInstance($plugin);
   return $plugin_ui->access($facet);
 }
 
@@ -1118,7 +1118,7 @@ function system_plugin_ui_access($plugin, $facet = NULL) {
  */
 function system_forms() {
   $forms = array();
-  foreach (drupal_container()->get('plugin.manager.system.plugin_ui')->getDefinitions() as $plugin_id => $plugin) {
+  foreach (Drupal::service('plugin.manager.system.plugin_ui')->getDefinitions() as $plugin_id => $plugin) {
     if (empty($forms[$plugin['id']])) {
       $forms[$plugin['id']]['callback'] = 'system_plugin_ui_form';
     }
@@ -2534,7 +2534,7 @@ function system_get_localized_date_format($languages) {
  */
 function system_custom_theme() {
   if (drupal_container()->isScopeActive('request')) {
-    $request = drupal_container()->get('request');
+    $request = Drupal::request();
     $path = $request->attributes->get('system_path');
     if (user_access('view the administration theme') && path_is_admin($path)) {
       return config('system.theme')->get('admin');
diff --git a/core/modules/system/tests/modules/design_test/design_test.module b/core/modules/system/tests/modules/design_test/design_test.module
index f69f961..35b8a73 100644
--- a/core/modules/system/tests/modules/design_test/design_test.module
+++ b/core/modules/system/tests/modules/design_test/design_test.module
@@ -95,7 +95,7 @@ function design_test_menu_local_tasks_alter(&$data, $router_item, $root_path) {
   if ($router_item['number_parts'] > 2 && strpos($root_path, 'design_test/') === 0) {
     $actions = &$data['actions']['output'];
     // Determine the currently selected theme, if any.
-    $selected_theme = drupal_container()->get('request')->query->get('theme');
+    $selected_theme = Drupal::request()->query->get('theme');
     $default_theme = config('system.theme')->get('default');
 
     // Expand all enabled themes into action links.
@@ -129,5 +129,5 @@ function design_test_menu_local_tasks_alter(&$data, $router_item, $root_path) {
  * query parameter. The returned value is validated by the menu system already.
  */
 function design_test_menu_theme_callback() {
-  return drupal_container()->get('request')->query->get('theme');
+  return Drupal::request()->query->get('theme');
 }