diff --git a/.gitlab/ci/rails.gitlab-ci.yml b/.gitlab/ci/rails.gitlab-ci.yml
index 8a4ea690c60..79f3ddff3ec 100644
--- a/.gitlab/ci/rails.gitlab-ci.yml
+++ b/.gitlab/ci/rails.gitlab-ci.yml
@@ -25,7 +25,8 @@
 .decomposed-database-rspec:
   extends: .decomposed-database
   variables:
-    GITLAB_LOAD_BALANCING_REUSE_PRIMARY_ci: "main"
+    # For decomposition phase 3, uncomment line below:
+    # GITLAB_LOAD_BALANCING_REUSE_PRIMARY_ci: "main"
     GITLAB_USE_MODEL_LOAD_BALANCING: "true"
 
 .rspec-base:
diff --git a/app/assets/javascripts/behaviors/shortcuts/keybindings.js b/app/assets/javascripts/behaviors/shortcuts/keybindings.js
index b27dccabdf8..23b66405844 100644
--- a/app/assets/javascripts/behaviors/shortcuts/keybindings.js
+++ b/app/assets/javascripts/behaviors/shortcuts/keybindings.js
@@ -131,6 +131,13 @@ export const ITALIC_TEXT = {
   customizable: false,
 };
 
+export const STRIKETHROUGH_TEXT = {
+  id: 'editing.strikethroughText',
+  description: __('Strikethrough text'),
+  defaultKeys: ['mod+shift+x'],
+  customizable: false,
+};
+
 export const LINK_TEXT = {
   id: 'editing.linkText',
   description: __('Link text'),
@@ -511,7 +518,14 @@ export const GLOBAL_SHORTCUTS_GROUP = {
 export const EDITING_SHORTCUTS_GROUP = {
   id: 'editing',
   name: __('Editing'),
-  keybindings: [BOLD_TEXT, ITALIC_TEXT, LINK_TEXT, TOGGLE_MARKDOWN_PREVIEW, EDIT_RECENT_COMMENT],
+  keybindings: [
+    BOLD_TEXT,
+    ITALIC_TEXT,
+    STRIKETHROUGH_TEXT,
+    LINK_TEXT,
+    TOGGLE_MARKDOWN_PREVIEW,
+    EDIT_RECENT_COMMENT,
+  ],
 };
 
 export const WIKI_SHORTCUTS_GROUP = {
diff --git a/app/assets/javascripts/gfm_auto_complete.js b/app/assets/javascripts/gfm_auto_complete.js
index bf29a356abd..7282a92a847 100644
--- a/app/assets/javascripts/gfm_auto_complete.js
+++ b/app/assets/javascripts/gfm_auto_complete.js
@@ -574,6 +574,10 @@ class GfmAutoComplete {
               // Do not match if there is no `~` before the cursor
               return null;
             }
+            if (subtext.endsWith('~~')) {
+              // Do not match if there are two consecutive `~` characters (strikethrough) before the cursor
+              return null;
+            }
             const lastCandidate = subtext.split(flag).pop();
             if (labels.find((label) => label.title.startsWith(lastCandidate))) {
               return lastCandidate;
diff --git a/app/assets/javascripts/vue_shared/components/markdown/header.vue b/app/assets/javascripts/vue_shared/components/markdown/header.vue
index 21794f7f122..13189670e17 100644
--- a/app/assets/javascripts/vue_shared/components/markdown/header.vue
+++ b/app/assets/javascripts/vue_shared/components/markdown/header.vue
@@ -1,7 +1,13 @@
 <script>
 import { GlPopover, GlButton, GlTooltipDirective, GlTabs, GlTab } from '@gitlab/ui';
 import $ from 'jquery';
-import { keysFor, BOLD_TEXT, ITALIC_TEXT, LINK_TEXT } from '~/behaviors/shortcuts/keybindings';
+import {
+  keysFor,
+  BOLD_TEXT,
+  ITALIC_TEXT,
+  STRIKETHROUGH_TEXT,
+  LINK_TEXT,
+} from '~/behaviors/shortcuts/keybindings';
 import { getSelectedFragment } from '~/lib/utils/common_utils';
 import { s__, __ } from '~/locale';
 import { CopyAsGFM } from '../../../behaviors/markdown/copy_as_gfm';
@@ -149,6 +155,7 @@ export default {
   shortcuts: {
     bold: keysFor(BOLD_TEXT),
     italic: keysFor(ITALIC_TEXT),
+    strikethrough: keysFor(STRIKETHROUGH_TEXT),
     link: keysFor(LINK_TEXT),
   },
   i18n: {
@@ -199,6 +206,16 @@ export default {
             :shortcuts="$options.shortcuts.italic"
             icon="italic"
           />
+          <toolbar-button
+            tag="~~"
+            :button-title="
+              sprintf(s__('MarkdownEditor|Add strikethrough text (%{modifierKey}⇧X)'), {
+                modifierKey,
+              })
+            "
+            :shortcuts="$options.shortcuts.strikethrough"
+            icon="strikethrough"
+          />
           <toolbar-button
             :prepend="true"
             :tag="tag"
diff --git a/app/models/ci/pipeline.rb b/app/models/ci/pipeline.rb
index a1311b8555f..20e92bddf45 100644
--- a/app/models/ci/pipeline.rb
+++ b/app/models/ci/pipeline.rb
@@ -1166,7 +1166,7 @@ module Ci
 
     def merge_request?
       if Feature.enabled?(:ci_pipeline_merge_request_presence_check, default_enabled: :yaml)
-        merge_request_id.present? && merge_request
+        merge_request_id.present? && merge_request.present?
       else
         merge_request_id.present?
       end
diff --git a/app/views/shared/blob/_markdown_buttons.html.haml b/app/views/shared/blob/_markdown_buttons.html.haml
index e02c24b93f1..60641006e96 100644
--- a/app/views/shared/blob/_markdown_buttons.html.haml
+++ b/app/views/shared/blob/_markdown_buttons.html.haml
@@ -9,6 +9,10 @@
                               data: { "md-tag" => "_", "md-shortcuts": '["mod+i"]' },
                               title: sprintf(s_("MarkdownEditor|Add italic text (%{modifier_key}I)") % { modifier_key: modifier_key }) })
 
+  = markdown_toolbar_button({ icon: "strikethrough",
+                              data: { "md-tag" => "~~", "md-shortcuts": '["mod+shift+x"]' },
+                              title: sprintf(s_("MarkdownEditor|Add strikethrough text (%{modifier_key}⇧X)") % { modifier_key: modifier_key }) })
+
   = markdown_toolbar_button({ icon: "quote", data: { "md-tag" => "> ", "md-prepend" => true }, title: _("Insert a quote") })
   = markdown_toolbar_button({ icon: "code", data: { "md-tag" => "`", "md-block" => "```" }, title: _("Insert code") })
 
diff --git a/doc/administration/database_load_balancing.md b/doc/administration/database_load_balancing.md
deleted file mode 100644
index 92b8342f251..00000000000
--- a/doc/administration/database_load_balancing.md
+++ /dev/null
@@ -1,9 +0,0 @@
----
-redirect_to: 'postgresql/database_load_balancing.md'
-remove_date: '2022-02-19'
----
-
-This file was moved to [another location](postgresql/database_load_balancing.md).
-
-<!-- This redirect file can be deleted after <2022-02-19>. -->
-<!-- Before deletion, see: https://docs.gitlab.com/ee/development/documentation/#move-or-rename-a-page -->
diff --git a/doc/administration/geo/index.md b/doc/administration/geo/index.md
index c4164284e97..51308367056 100644
--- a/doc/administration/geo/index.md
+++ b/doc/administration/geo/index.md
@@ -23,7 +23,7 @@ to clone and fetch large repositories, speeding up development.
 
 For a video introduction to Geo, see [Introduction to GitLab Geo - GitLab Features](https://www.youtube.com/watch?v=-HDLxSjEh6w).
 
-To make sure you're using the right version of the documentation, navigate to [the Geo page on GitLab.com](https://gitlab.com/gitlab-org/gitlab/-/blob/master/doc/administration/geo/index.md) and choose the appropriate release from the **Switch branch/tag** dropdown. For example, [`v13.7.6-ee`](https://gitlab.com/gitlab-org/gitlab/-/blob/v13.7.6-ee/doc/administration/geo/index.md).
+To make sure you're using the right version of the documentation, go to [the Geo page on GitLab.com](https://gitlab.com/gitlab-org/gitlab/-/blob/master/doc/administration/geo/index.md) and choose the appropriate release from the **Switch branch/tag** dropdown list. For example, [`v13.7.6-ee`](https://gitlab.com/gitlab-org/gitlab/-/blob/v13.7.6-ee/doc/administration/geo/index.md).
 
 Geo uses a set of defined terms that are described in the [Geo Glossary](glossary.md).
 Be sure to familiarize yourself with those terms.
@@ -148,14 +148,14 @@ NOTE:
 When using HTTP or HTTPS proxying, your load balancer must be configured to pass through the `Connection` and `Upgrade` hop-by-hop headers. See the [web terminal](../integration/terminal.md) integration guide for more details.
 
 NOTE:
-When using HTTPS protocol for port 443, you need to add an SSL certificate to the load balancers.
+When using HTTPS protocol for port 443, you must add an SSL certificate to the load balancers.
 If you wish to terminate SSL at the GitLab application server instead, use TCP protocol.
 
 #### Internal URL
 
 HTTP requests from any Geo secondary site to the primary Geo site use the Internal URL of the primary
 Geo site. If this is not explicitly defined in the primary Geo site settings in the Admin Area, the
-public URL of the primary site will be used.
+public URL of the primary site is used.
 
 To update the internal URL of the primary Geo site:
 
@@ -187,7 +187,7 @@ Because the replicated database instance is read-only, we need this additional d
 This daemon:
 
 - Reads a log of events replicated by the **primary** site to the **secondary** database instance.
-- Updates the Geo Tracking Database instance with changes that need to be executed.
+- Updates the Geo Tracking Database instance with changes that must be executed.
 
 When something is marked to be updated in the tracking database instance, asynchronous jobs running on the **secondary** site execute the required operations and update the state.
 
@@ -198,7 +198,7 @@ This new architecture allows GitLab to be resilient to connectivity issues betwe
 WARNING:
 This list of limitations only reflects the latest version of GitLab. If you are using an older version, extra limitations may be in place.
 
-- Pushing directly to a **secondary** site redirects (for HTTP) or proxies (for SSH) the request to the **primary** site instead of [handling it directly](https://gitlab.com/gitlab-org/gitlab/-/issues/1381), except when using Git over HTTP with credentials embedded within the URI. For example, `https://user:password@secondary.tld`.
+- Pushing directly to a **secondary** site redirects (for HTTP) or proxies (for SSH) the request to the **primary** site instead of [handling it directly](https://gitlab.com/gitlab-org/gitlab/-/issues/1381), except when using Git over HTTP with credentials embedded in the URI. For example, `https://user:password@secondary.tld`.
 - The **primary** site has to be online for OAuth login to happen. Existing sessions and Git are not affected. Support for the **secondary** site to use an OAuth provider independent from the primary is [being planned](https://gitlab.com/gitlab-org/gitlab/-/issues/208465).
 - The installation takes multiple manual steps that together can take about an hour depending on circumstances. We are working on improving this experience. See [Omnibus GitLab issue #2978](https://gitlab.com/gitlab-org/omnibus-gitlab/-/issues/2978) for details.
 - Real-time updates of issues/merge requests (for example, via long polling) doesn't work on the **secondary** site.
@@ -216,7 +216,7 @@ For setup instructions, see [Setting up Geo](setup/index.md).
 
 ## Post-installation documentation
 
-After installing GitLab on the **secondary** site(s) and performing the initial configuration, see the following documentation for post-installation information.
+After installing GitLab on the **secondary** sites and performing the initial configuration, see the following documentation for post-installation information.
 
 ### Configuring Geo
 
@@ -224,7 +224,7 @@ For information on configuring Geo, see [Geo configuration](replication/configur
 
 ### Updating Geo
 
-For information on how to update your Geo site(s) to the latest GitLab version, see [Updating the Geo sites](replication/updating_the_geo_sites.md).
+For information on how to update your Geo sites to the latest GitLab version, see [Updating the Geo sites](replication/updating_the_geo_sites.md).
 
 ### Pausing and resuming replication
 
@@ -237,8 +237,8 @@ secondary. If the site is paused, be sure to resume before promoting. This
 issue has been fixed in GitLab 13.4 and later.
 
 WARNING:
-Pausing and resuming of replication is currently only supported for Geo installations using an
-Omnibus GitLab-managed database. External databases are currently not supported.
+Pausing and resuming of replication is only supported for Geo installations using an
+Omnibus GitLab-managed database. External databases are not supported.
 
 In some circumstances, like during [upgrades](replication/updating_the_geo_sites.md) or a [planned failover](disaster_recovery/planned_failover.md), it is desirable to pause replication between the primary and secondary.
 
diff --git a/doc/administration/geo/replication/using_a_geo_server.md b/doc/administration/geo/replication/using_a_geo_server.md
deleted file mode 100644
index 62562a1149d..00000000000
--- a/doc/administration/geo/replication/using_a_geo_server.md
+++ /dev/null
@@ -1,9 +0,0 @@
----
-redirect_to: '../../geo/replication/usage.md'
-remove_date: '2022-02-01'
----
-
-This document was moved to [another location](../../geo/replication/usage.md).
-
-<!-- This redirect file can be deleted after 2022-02-01 -->
-<!-- Before deletion, see: https://docs.gitlab.com/ee/development/documentation/#move-or-rename-a-page -->
diff --git a/doc/administration/monitoring/prometheus/index.md b/doc/administration/monitoring/prometheus/index.md
index 9d90c4f3cc7..22f7419be9a 100644
--- a/doc/administration/monitoring/prometheus/index.md
+++ b/doc/administration/monitoring/prometheus/index.md
@@ -301,7 +301,7 @@ Prometheus has several custom flags to configure local storage:
 
 - `storage.tsdb.retention.time`: when to remove old data. Defaults to `15d`. Overrides
   `storage.tsdb.retention` if this flag is set to anything other than the default.
-- `storage.tsdb.retention.size`: [EXPERIMENTAL] the maximum number of bytes of storage blocks to
+- `storage.tsdb.retention.size`: (experimental) the maximum number of bytes of storage blocks to
   retain. The oldest data is removed first. Defaults to `0` (disabled). This flag is experimental
   and may change in future releases. Units supported: `B`, `KB`, `MB`, `GB`, `TB`, `PB`, `EB`. For
   example, `512MB`.
diff --git a/doc/administration/package_information/deprecated_os.md b/doc/administration/package_information/deprecated_os.md
deleted file mode 100644
index 1f6fe0fce5d..00000000000
--- a/doc/administration/package_information/deprecated_os.md
+++ /dev/null
@@ -1,9 +0,0 @@
----
-redirect_to: 'supported_os.md'
-remove_date: '2022-02-18'
----
-
-This document was moved to [another location](supported_os.md).
-
-<!-- This redirect file can be deleted after <2022-02-18>. -->
-<!-- Before deletion, see: https://docs.gitlab.com/ee/development/documentation/#move-or-rename-a-page -->
diff --git a/doc/ci/runners/build_cloud/linux_build_cloud.md b/doc/ci/runners/build_cloud/linux_build_cloud.md
deleted file mode 100644
index 2892a30cd2e..00000000000
--- a/doc/ci/runners/build_cloud/linux_build_cloud.md
+++ /dev/null
@@ -1,9 +0,0 @@
----
-redirect_to: '../saas/linux_saas_runner.md'
-remove_date: '2022-02-05'
----
-
-This document was moved to [another location](../saas/linux_saas_runner.md).
-
-<!-- This redirect file can be deleted after 2022-02-05. -->
-<!-- Before deletion, see: https://docs.gitlab.com/ee/development/documentation/#move-or-rename-a-page -->
diff --git a/doc/ci/runners/build_cloud/macos/environment.md b/doc/ci/runners/build_cloud/macos/environment.md
deleted file mode 100644
index a534e87cc34..00000000000
--- a/doc/ci/runners/build_cloud/macos/environment.md
+++ /dev/null
@@ -1,9 +0,0 @@
----
-redirect_to: '../../saas/macos/environment.md'
-remove_date: '2022-02-05'
----
-
-This document was moved to [another location](../../saas/macos/environment.md).
-
-<!-- This redirect file can be deleted after 2022-02-05. -->
-<!-- Before deletion, see: https://docs.gitlab.com/ee/development/documentation/#move-or-rename-a-page -->
diff --git a/doc/ci/runners/build_cloud/macos_build_cloud.md b/doc/ci/runners/build_cloud/macos_build_cloud.md
deleted file mode 100644
index 50b7e0cfb79..00000000000
--- a/doc/ci/runners/build_cloud/macos_build_cloud.md
+++ /dev/null
@@ -1,9 +0,0 @@
----
-redirect_to: '../saas/macos_saas_runner.md'
-remove_date: '2022-02-05'
----
-
-This document was moved to [another location](../saas/macos_saas_runner.md).
-
-<!-- This redirect file can be deleted after 2022-02-05. -->
-<!-- Before deletion, see: https://docs.gitlab.com/ee/development/documentation/#move-or-rename-a-page -->
diff --git a/doc/ci/runners/build_cloud/windows_build_cloud.md b/doc/ci/runners/build_cloud/windows_build_cloud.md
deleted file mode 100644
index fb64938eb9f..00000000000
--- a/doc/ci/runners/build_cloud/windows_build_cloud.md
+++ /dev/null
@@ -1,9 +0,0 @@
----
-redirect_to: '../saas/windows_saas_runner.md'
-remove_date: '2022-02-05'
----
-
-This document was moved to [another location](../saas/windows_saas_runner.md).
-
-<!-- This redirect file can be deleted after 2022-02-05. -->
-<!-- Before deletion, see: https://docs.gitlab.com/ee/development/documentation/#move-or-rename-a-page -->
diff --git a/doc/ci/runners/index.md b/doc/ci/runners/index.md
index 064ad64b79f..d8182614f5d 100644
--- a/doc/ci/runners/index.md
+++ b/doc/ci/runners/index.md
@@ -13,9 +13,9 @@ If you are using self-managed GitLab or you use GitLab.com but want to use your
 If you are using GitLab SaaS (GitLab.com), your CI jobs automatically run on runners provided by GitLab.
 No configuration is required. Your jobs can run on:
 
-- [Linux runners](build_cloud/linux_build_cloud.md).
-- [Windows runners](build_cloud/windows_build_cloud.md) (beta).
-- [macOS runners](build_cloud/macos_build_cloud.md) (beta).
+- [Linux runners](saas/linux_saas_runner.md).
+- [Windows runners](saas/windows_saas_runner.md) (beta).
+- [macOS runners](saas/macos_saas_runner.md) (beta).
 
 The number of minutes you can use on these runners depends on the
 [maximum number of CI/CD minutes](../pipelines/cicd_minutes.md)
diff --git a/doc/ci/runners/runner_cloud/linux_runner_cloud.md b/doc/ci/runners/runner_cloud/linux_runner_cloud.md
deleted file mode 100644
index 2892a30cd2e..00000000000
--- a/doc/ci/runners/runner_cloud/linux_runner_cloud.md
+++ /dev/null
@@ -1,9 +0,0 @@
----
-redirect_to: '../saas/linux_saas_runner.md'
-remove_date: '2022-02-05'
----
-
-This document was moved to [another location](../saas/linux_saas_runner.md).
-
-<!-- This redirect file can be deleted after 2022-02-05. -->
-<!-- Before deletion, see: https://docs.gitlab.com/ee/development/documentation/#move-or-rename-a-page -->
diff --git a/doc/ci/runners/runner_cloud/macos/environment.md b/doc/ci/runners/runner_cloud/macos/environment.md
deleted file mode 100644
index 37ad21c28fc..00000000000
--- a/doc/ci/runners/runner_cloud/macos/environment.md
+++ /dev/null
@@ -1,9 +0,0 @@
----
-redirect_to: '../../saas/macos/environment.md'
-remove_date: '2022-02-05'
----
-
-This document was moved to [another location](../../saas/macos/environment.md).
-
-<!-- This redirect file can be deleted after 2022-02-05. -->
-<!-- Before deletion, see: https://docs.gitlab.com/ee/development/documentation/#move-or-rename-a-page -->
\ No newline at end of file
diff --git a/doc/ci/runners/runner_cloud/macos_runner_cloud.md b/doc/ci/runners/runner_cloud/macos_runner_cloud.md
deleted file mode 100644
index 50b7e0cfb79..00000000000
--- a/doc/ci/runners/runner_cloud/macos_runner_cloud.md
+++ /dev/null
@@ -1,9 +0,0 @@
----
-redirect_to: '../saas/macos_saas_runner.md'
-remove_date: '2022-02-05'
----
-
-This document was moved to [another location](../saas/macos_saas_runner.md).
-
-<!-- This redirect file can be deleted after 2022-02-05. -->
-<!-- Before deletion, see: https://docs.gitlab.com/ee/development/documentation/#move-or-rename-a-page -->
diff --git a/doc/ci/runners/runner_cloud/windows_runner_cloud.md b/doc/ci/runners/runner_cloud/windows_runner_cloud.md
deleted file mode 100644
index fb64938eb9f..00000000000
--- a/doc/ci/runners/runner_cloud/windows_runner_cloud.md
+++ /dev/null
@@ -1,9 +0,0 @@
----
-redirect_to: '../saas/windows_saas_runner.md'
-remove_date: '2022-02-05'
----
-
-This document was moved to [another location](../saas/windows_saas_runner.md).
-
-<!-- This redirect file can be deleted after 2022-02-05. -->
-<!-- Before deletion, see: https://docs.gitlab.com/ee/development/documentation/#move-or-rename-a-page -->
diff --git a/doc/development/agent/gitops.md b/doc/development/agent/gitops.md
deleted file mode 100644
index 7c741408ae6..00000000000
--- a/doc/development/agent/gitops.md
+++ /dev/null
@@ -1,9 +0,0 @@
----
-redirect_to: 'https://gitlab.com/gitlab-org/cluster-integration/gitlab-agent/-/blob/master/doc/gitops.md'
-remove_date: '2022-02-01'
----
-
-This file was moved to [another location](https://gitlab.com/gitlab-org/cluster-integration/gitlab-agent/-/blob/master/doc/gitops.md).
-
-<!-- This redirect file can be deleted after <2022-02-01>. -->
-<!-- Before deletion, see: https://docs.gitlab.com/ee/development/documentation/#move-or-rename-a-page -->
diff --git a/doc/development/agent/identity.md b/doc/development/agent/identity.md
deleted file mode 100644
index 6caf108a32a..00000000000
--- a/doc/development/agent/identity.md
+++ /dev/null
@@ -1,9 +0,0 @@
----
-redirect_to: 'https://gitlab.com/gitlab-org/cluster-integration/gitlab-agent/-/blob/master/doc/identity_and_auth.md'
-remove_date: '2022-02-01'
----
-
-This file was moved to [another location](https://gitlab.com/gitlab-org/cluster-integration/gitlab-agent/-/blob/master/doc/identity_and_auth.md).
-
-<!-- This redirect file can be deleted after <2022-02-01>. -->
-<!-- Before deletion, see: https://docs.gitlab.com/ee/development/documentation/#move-or-rename-a-page -->
diff --git a/doc/development/agent/index.md b/doc/development/agent/index.md
deleted file mode 100644
index 474f8a02933..00000000000
--- a/doc/development/agent/index.md
+++ /dev/null
@@ -1,9 +0,0 @@
----
-redirect_to: 'https://gitlab.com/gitlab-org/cluster-integration/gitlab-agent/-/blob/master/doc/architecture.md'
-remove_date: '2022-02-01'
----
-
-This file was moved to [another location](https://gitlab.com/gitlab-org/cluster-integration/gitlab-agent/-/blob/master/doc/architecture.md).
-
-<!-- This redirect file can be deleted after <2022-02-01>. -->
-<!-- Before deletion, see: https://docs.gitlab.com/ee/development/documentation/#move-or-rename-a-page -->
diff --git a/doc/development/agent/local.md b/doc/development/agent/local.md
deleted file mode 100644
index a4b29bea838..00000000000
--- a/doc/development/agent/local.md
+++ /dev/null
@@ -1,9 +0,0 @@
----
-redirect_to: 'https://gitlab.com/gitlab-org/cluster-integration/gitlab-agent/-/blob/master/doc/local.md'
-remove_date: '2022-02-01'
----
-
-This file was moved to [another location](https://gitlab.com/gitlab-org/cluster-integration/gitlab-agent/-/blob/master/doc/local.md).
-
-<!-- This redirect file can be deleted after <2022-02-01>. -->
-<!-- Before deletion, see: https://docs.gitlab.com/ee/development/documentation/#move-or-rename-a-page -->
diff --git a/doc/development/agent/repository_overview.md b/doc/development/agent/repository_overview.md
deleted file mode 100644
index 8ea9dceb32a..00000000000
--- a/doc/development/agent/repository_overview.md
+++ /dev/null
@@ -1,9 +0,0 @@
----
-redirect_to: 'https://gitlab.com/gitlab-org/cluster-integration/gitlab-agent/-/blob/master/doc/repository_overview.md'
-remove_date: '2022-02-01'
----
-
-This file was moved to [another location](https://gitlab.com/gitlab-org/cluster-integration/gitlab-agent/-/blob/master/doc/repository_overview.md).
-
-<!-- This redirect file can be deleted after <2022-02-01>. -->
-<!-- Before deletion, see: https://docs.gitlab.com/ee/development/documentation/#move-or-rename-a-page -->
diff --git a/doc/development/agent/routing.md b/doc/development/agent/routing.md
deleted file mode 100644
index 364267a45fe..00000000000
--- a/doc/development/agent/routing.md
+++ /dev/null
@@ -1,9 +0,0 @@
----
-redirect_to: 'https://gitlab.com/gitlab-org/cluster-integration/gitlab-agent/-/blob/master/doc/kas_request_routing.md'
-remove_date: '2022-02-01'
----
-
-This file was moved to [another location](https://gitlab.com/gitlab-org/cluster-integration/gitlab-agent/-/blob/master/doc/kas_request_routing.md).
-
-<!-- This redirect file can be deleted after <2022-02-01>. -->
-<!-- Before deletion, see: https://docs.gitlab.com/ee/development/documentation/#move-or-rename-a-page -->
diff --git a/doc/development/agent/user_stories.md b/doc/development/agent/user_stories.md
deleted file mode 100644
index 2ed4bbdc9f6..00000000000
--- a/doc/development/agent/user_stories.md
+++ /dev/null
@@ -1,9 +0,0 @@
----
-redirect_to: 'https://gitlab.com/gitlab-org/cluster-integration/gitlab-agent/-/blob/master/doc/user_stories.md'
-remove_date: '2022-02-01'
----
-
-This file was moved to [another location](https://gitlab.com/gitlab-org/cluster-integration/gitlab-agent/-/blob/master/doc/user_stories.md).
-
-<!-- This redirect file can be deleted after <2022-02-01>. -->
-<!-- Before deletion, see: https://docs.gitlab.com/ee/development/documentation/#move-or-rename-a-page -->
diff --git a/doc/development/documentation/styleguide/word_list.md b/doc/development/documentation/styleguide/word_list.md
index 3dea0537668..407bf0c09f9 100644
--- a/doc/development/documentation/styleguide/word_list.md
+++ b/doc/development/documentation/styleguide/word_list.md
@@ -201,10 +201,6 @@ CI/CD is always uppercase. No need to spell it out on first use.
 Use **CI/CD minutes** instead of **CI minutes**, **pipeline minutes**, **pipeline minutes quota**, or
 **CI pipeline minutes**. This decision was made in [this issue](https://gitlab.com/gitlab-org/gitlab/-/issues/342813).
 
-## CI/CD tunnel
-
-Use lowercase for **tunnel** in **CI/CD tunnel**.
-
 ## click
 
 Do not use **click**. Instead, use **select** with buttons, links, menu items, and lists.
diff --git a/doc/development/internal_api.md b/doc/development/internal_api.md
deleted file mode 100644
index 7790a5e23e6..00000000000
--- a/doc/development/internal_api.md
+++ /dev/null
@@ -1,9 +0,0 @@
----
-redirect_to: 'internal_api/index.md'
-remove_date: '2022-02-09'
----
-
-This document was moved to [another location](internal_api/index.md).
-
-<!-- This redirect file can be deleted after <2022-02-09>. -->
-<!-- Before deletion, see: https://docs.gitlab.com/ee/development/documentation/#move-or-rename-a-page -->
diff --git a/doc/install/requirements.md b/doc/install/requirements.md
index bce9702b032..cacf23bbe21 100644
--- a/doc/install/requirements.md
+++ b/doc/install/requirements.md
@@ -303,7 +303,7 @@ The GitLab Runner server requirements depend on:
 
 Since the nature of the jobs varies for each use case, you need to experiment by adjusting the job concurrency to get the optimum setting.
 
-For reference, the [SaaS runners on Linux](../ci/runners/build_cloud/linux_build_cloud.md)
+For reference, the [SaaS runners on Linux](../ci/runners/saas/linux_saas_runner.md)
 are configured so that a **single job** runs in a **single instance** with:
 
 - 1 vCPU.
diff --git a/doc/topics/autodevops/customize.md b/doc/topics/autodevops/customize.md
index 089f9f8e7cc..ceb745138ee 100644
--- a/doc/topics/autodevops/customize.md
+++ b/doc/topics/autodevops/customize.md
@@ -431,7 +431,7 @@ applications.
 | `HELM_UPGRADE_EXTRA_ARGS`               | Allows extra options in `helm upgrade` commands when deploying the application. Note that using quotes doesn't prevent word splitting. |
 | `INCREMENTAL_ROLLOUT_MODE`              | If present, can be used to enable an [incremental rollout](#incremental-rollout-to-production) of your application for the production environment. Set to `manual` for manual deployment jobs or `timed` for automatic rollout deployments with a 5 minute delay each one. |
 | `K8S_SECRET_*`                          | Any variable prefixed with [`K8S_SECRET_`](#application-secret-variables) is made available by Auto DevOps as environment variables to the deployed application. |
-| `KUBE_CONTEXT`                          | From GitLab 14.5, can be used to select which context to use from `KUBECONFIG`. When `KUBE_CONTEXT` is blank, the default context in `KUBECONFIG` (if any) will be used. A context must be selected when using the [CI/CD tunnel](../../user/clusters/agent/ci_cd_tunnel.md). |
+| `KUBE_CONTEXT`                          | From GitLab 14.5, can be used to select a context to use from `KUBECONFIG`. When `KUBE_CONTEXT` is blank, the default context in `KUBECONFIG` (if any) is used. A context must be selected when used [with the agent for Kubernetes](../../user/clusters/agent/ci_cd_tunnel.md). |
 | `KUBE_INGRESS_BASE_DOMAIN`              | Can be used to set a domain per cluster. See [cluster domains](../../user/project/clusters/gitlab_managed_clusters.md#base-domain) for more information. |
 | `KUBE_NAMESPACE`                        | The namespace used for deployments. When using certificate-based clusters, [this value should not be overwritten directly](../../user/project/clusters/deploy_to_cluster.md#custom-namespace). |
 | `KUBECONFIG`                            | The kubeconfig to use for deployments. User-provided values take priority over GitLab-provided values. |
diff --git a/doc/topics/index.md b/doc/topics/index.md
deleted file mode 100644
index 6d2c839430b..00000000000
--- a/doc/topics/index.md
+++ /dev/null
@@ -1,9 +0,0 @@
----
-redirect_to: '../index.md'
-remove_date: '2022-02-03'
----
-
-This document was moved to [another location](../index.md).
-
-<!-- This redirect file can be deleted after <2022-02-03>. -->
-<!-- Before deletion, see: https://docs.gitlab.com/ee/development/documentation/#move-or-rename-a-page -->
diff --git a/doc/topics/release_your_application.md b/doc/topics/release_your_application.md
index c0fb3652d81..7ed227adcac 100644
--- a/doc/topics/release_your_application.md
+++ b/doc/topics/release_your_application.md
@@ -30,14 +30,14 @@ to Kubernetes clusters using the [GitLab agent](../user/clusters/agent/install/i
 
 #### GitOps deployments **(PREMIUM)**
 
-With the [GitLab agent](../user/clusters/agent/install/index.md), you can perform [pull-based
+With the [GitLab agent for Kubernetes](../user/clusters/agent/install/index.md), you can perform [pull-based
 deployments of Kubernetes manifests](../user/clusters/agent/gitops.md). This provides a scalable, secure, and cloud-native
 approach to manage Kubernetes deployments.
 
-#### Deploy to Kubernetes with the CI/CD Tunnel
+#### Deploy to Kubernetes from GitLab CI/CD
 
-With the [GitLab agent](../user/clusters/agent/install/index.md), you can perform push-based
-deployments with the [CI/CD Tunnel](../user/clusters/agent/ci_cd_tunnel.md). It provides
+With the [GitLab agent for Kubernetes](../user/clusters/agent/install/index.md), you can perform [push-based
+deployments](../user/clusters/agent/ci_cd_tunnel.md) from GitLab CI/CD. The agent provides
 a secure and reliable connection between GitLab and your Kubernetes cluster.
 
 ### Deploy to AWS with GitLab CI/CD
diff --git a/doc/user/clusters/agent/runner.md b/doc/user/clusters/agent/runner.md
deleted file mode 100644
index c40733bd7a5..00000000000
--- a/doc/user/clusters/agent/runner.md
+++ /dev/null
@@ -1,9 +0,0 @@
----
-redirect_to: 'https://docs.gitlab.com/runner/install/kubernetes-agent.html'
-remove_date: '2022-02-01'
----
-
-This document was moved to [another location](https://docs.gitlab.com/runner/install/kubernetes-agent.html).
-
-<!-- This redirect file can be deleted after <2022-02-01>. -->
-<!-- Before deletion, see: https://docs.gitlab.com/ee/development/documentation/#move-or-rename-a-page -->
\ No newline at end of file
diff --git a/doc/user/clusters/management_project_template.md b/doc/user/clusters/management_project_template.md
index 93af5849fcb..47c743e1c60 100644
--- a/doc/user/clusters/management_project_template.md
+++ b/doc/user/clusters/management_project_template.md
@@ -25,7 +25,7 @@ For instance, you can:
 
 The template contains the following [components](#configure-the-available-components):
 
-- A pre-configured GitLab CI/CD file so that you can configure CI/CD pipelines using the [CI/CD Tunnel](agent/ci_cd_tunnel.md).
+- A pre-configured `.gitlab-ci.yml`file so that you can configure CI/CD pipelines using [the agent for Kubernetes](agent/ci_cd_tunnel.md).
 - A pre-configured [Helmfile](https://github.com/roboll/helmfile) so that
 you can manage cluster applications with [Helm v3](https://helm.sh/).
 - An `applications` directory with a `helmfile.yaml` configured for each
@@ -69,7 +69,7 @@ We assume that you already have a cluster connected through the agent and
 
 1. [Create a new project from the Cluster Management Project Template](#create-a-new-project-based-on-the-cluster-management-template).
 This new project is "project B".
-1. In your "project A", [grant the agent access to the new project (B) through the CI/CD Tunnel](agent/ci_cd_tunnel.md#authorize-the-agent).
+1. In your "project A", [grant the agent access to the new project (B)](agent/ci_cd_tunnel.md#authorize-the-agent).
 1. From the "project's B" settings, add a [new environment variable](../../ci/variables/index.md#add-a-cicd-variable-to-a-project) `$KUBE_CONTEXT` and set it to `path/to/agent-configuration-project:your-agent-name`.
 1. In "project B", [configure the components](#configure-the-available-components) inherited from the template.
 
diff --git a/doc/user/infrastructure/clusters/index.md b/doc/user/infrastructure/clusters/index.md
index 5f9cc2e2f5f..cd7c5feb284 100644
--- a/doc/user/infrastructure/clusters/index.md
+++ b/doc/user/infrastructure/clusters/index.md
@@ -67,6 +67,5 @@ The concept of [project-level](../../project/clusters/index.md),
 [instance-level](../../instance/clusters/index.md) clusters becomes
 extinct in the new model, although the functionality remains to some extent.
 
-The agent is always configured in a single GitLab project, but you can use the CI/CD Tunnel to
-authorize other projects and groups to use the same agent.
+The agent is always configured in a single GitLab project and you can expose the cluster connection to other projects and groups to [access it from GitLab CI/CD](../../clusters/agent/ci_cd_tunnel.md).
 By doing so, you are granting these projects and groups access to the same cluster, which is similar to group-level clusters' use case.
diff --git a/doc/user/project/merge_requests/code_quality.md b/doc/user/project/merge_requests/code_quality.md
index d735ce0ef91..10fc778d5ae 100644
--- a/doc/user/project/merge_requests/code_quality.md
+++ b/doc/user/project/merge_requests/code_quality.md
@@ -592,17 +592,17 @@ plugins:
 If your merge requests do not show any code quality changes when using a custom tool,
 ensure that the line property is an `integer`.
 
-### Code Quality CI job with Code Climate plugins enabled fails with error "engine <plugin_name> ran for 900 seconds and was killed"
+### Code Quality CI job with Code Climate plugins enabled fails with error
 
-If you enabled any of the Code Climate plugins, and the Code Quality CI job fails with the error below,
-it's likely the job takes longer than the default timeout of 900 seconds.
+If you enabled any of the Code Climate plugins, and the Code Quality CI job fails with the error
+below, it's likely the job takes longer than the default timeout of 900 seconds:
 
 ```shell
 error: (CC::CLI::Analyze::EngineFailure) engine pmd ran for 900 seconds and was killed
 Could not analyze code quality for the repository at /code
 ```
 
-To work around this problem, set `TIMEOUT_SECONDS` to a higher value in your `.gitlab.-ci.yml` file. 
+To work around this problem, set `TIMEOUT_SECONDS` to a higher value in your `.gitlab.-ci.yml` file.
 
 For example:
 
diff --git a/doc/user/project/merge_requests/load_performance_testing.md b/doc/user/project/merge_requests/load_performance_testing.md
index cc4ad186771..7861e1e28fc 100644
--- a/doc/user/project/merge_requests/load_performance_testing.md
+++ b/doc/user/project/merge_requests/load_performance_testing.md
@@ -92,7 +92,7 @@ template that is included with GitLab.
 NOTE:
 For large scale k6 tests you need to ensure the GitLab Runner instance performing the actual
 test is able to handle running the test. Refer to [k6's guidance](https://k6.io/docs/testing-guides/running-large-tests#hardware-considerations)
-for spec details. The [default shared GitLab.com runners](../../../ci/runners/build_cloud/linux_build_cloud.md)
+for spec details. The [default shared GitLab.com runners](../../../ci/runners/saas/linux_saas_runner.md)
 likely have insufficient specs to handle most large k6 tests.
 
 This template runs the
diff --git a/doc/user/project/merge_requests/resolve_conflicts.md b/doc/user/project/merge_requests/resolve_conflicts.md
deleted file mode 100644
index 611f37a949b..00000000000
--- a/doc/user/project/merge_requests/resolve_conflicts.md
+++ /dev/null
@@ -1,9 +0,0 @@
----
-redirect_to: 'conflicts.md'
-remove_date: '2022-01-26'
----
-
-This document was moved to [another location](conflicts.md).
-
-<!-- This redirect file can be deleted after <2022-01-26>. -->
-<!-- Before deletion, see: https://docs.gitlab.com/ee/development/documentation/#move-or-rename-a-page -->
diff --git a/doc/user/shortcuts.md b/doc/user/shortcuts.md
index 5259938f8af..e807f251da1 100644
--- a/doc/user/shortcuts.md
+++ b/doc/user/shortcuts.md
@@ -51,6 +51,7 @@ descriptions):
 | <kbd>Command</kbd> + <kbd>Shift</kbd> + <kbd>p</kbd> | <kbd>Control</kbd> + <kbd>Shift</kbd> + <kbd>p</kbd> | Toggle Markdown preview when editing text in a text field that has **Write** and **Preview** tabs at the top. |
 | <kbd>Command</kbd> + <kbd>b</kbd>       | <kbd>Control</kbd> + <kbd>b</kbd> | Bold the selected text (surround it with `**`). |
 | <kbd>Command</kbd> + <kbd>i</kbd>       | <kbd>Control</kbd> + <kbd>i</kbd> | Italicize the selected text (surround it with `_`). |
+| <kbd>Command</kbd> + <kbd>Shift</kbd> + <kbd>s</kbd> | <kbd>Control</kbd> + <kbd>Shift</kbd> + <kbd>s</kbd> | Strike through the selected text (surround it with `~~`). |
 | <kbd>Command</kbd> + <kbd>k</kbd>       | <kbd>Control</kbd> + <kbd>k</kbd> | Add a link (surround the selected text with `[]()`). |
 
 The shortcuts for editing in text fields are always enabled, even if other
diff --git a/locale/gitlab.pot b/locale/gitlab.pot
index 26979a2be10..0d2fc445547 100644
--- a/locale/gitlab.pot
+++ b/locale/gitlab.pot
@@ -22383,6 +22383,12 @@ msgstr ""
 msgid "MarkdownEditor|Add italic text (%{modifier_key}I)"
 msgstr ""
 
+msgid "MarkdownEditor|Add strikethrough text (%{modifierKey}⇧X)"
+msgstr ""
+
+msgid "MarkdownEditor|Add strikethrough text (%{modifier_key}⇧X)"
+msgstr ""
+
 msgid "Marked For Deletion At - %{deletion_time}"
 msgstr ""
 
@@ -35087,6 +35093,9 @@ msgstr ""
 msgid "Strikethrough"
 msgstr ""
 
+msgid "Strikethrough text"
+msgstr ""
+
 msgid "Subgroup information"
 msgstr ""
 
diff --git a/qa/qa/specs/features/browser_ui/3_create/web_ide/open_fork_in_web_ide_spec.rb b/qa/qa/specs/features/browser_ui/3_create/web_ide/open_fork_in_web_ide_spec.rb
index a7d2fb4ad2a..653c0657c81 100644
--- a/qa/qa/specs/features/browser_ui/3_create/web_ide/open_fork_in_web_ide_spec.rb
+++ b/qa/qa/specs/features/browser_ui/3_create/web_ide/open_fork_in_web_ide_spec.rb
@@ -3,8 +3,7 @@
 module QA
   RSpec.describe 'Create' do
     describe 'Open a fork in Web IDE', quarantine: {
-        only: { subdomain: %i[canary production] },
-        issue: "https://gitlab.com/gitlab-org/gitlab/-/issues/347247",
+        issue: "https://gitlab.com/gitlab-org/gitlab/-/issues/351696",
         type: :flaky
     } do
       let(:parent_project) do
diff --git a/spec/features/admin/users/users_spec.rb b/spec/features/admin/users/users_spec.rb
index 619090a179d..f043765b3ad 100644
--- a/spec/features/admin/users/users_spec.rb
+++ b/spec/features/admin/users/users_spec.rb
@@ -338,6 +338,8 @@ RSpec.describe 'Admin::Users' do
       end
 
       it 'displays count of the users authorized groups' do
+        visit admin_users_path
+
         wait_for_requests
 
         expect(page.find("[data-testid='user-group-count-#{current_user.id}']").text).to eq("2")
diff --git a/spec/features/issues/gfm_autocomplete_spec.rb b/spec/features/issues/gfm_autocomplete_spec.rb
index b4d1b0aeab9..e12fceadebe 100644
--- a/spec/features/issues/gfm_autocomplete_spec.rb
+++ b/spec/features/issues/gfm_autocomplete_spec.rb
@@ -111,6 +111,20 @@ RSpec.describe 'GFM autocomplete', :js do
         fill_in 'Comment', with: "test\n\n@"
         expect(find_autocomplete_menu).to be_visible
       end
+
+      it 'does not open label autocomplete menu after strikethrough', :aggregate_failures do
+        fill_in 'Comment', with: "~~"
+        expect(page).not_to have_css('.atwho-view')
+
+        fill_in 'Comment', with: "~~gone~~"
+        expect(page).not_to have_css('.atwho-view')
+
+        fill_in 'Comment', with: "~"
+        expect(find_autocomplete_menu).to be_visible
+
+        fill_in 'Comment', with: "test\n\n~"
+        expect(find_autocomplete_menu).to be_visible
+      end
     end
 
     context 'xss checks' do
diff --git a/spec/features/markdown/keyboard_shortcuts_spec.rb b/spec/features/markdown/keyboard_shortcuts_spec.rb
index 81b1928658c..82288af1f9f 100644
--- a/spec/features/markdown/keyboard_shortcuts_spec.rb
+++ b/spec/features/markdown/keyboard_shortcuts_spec.rb
@@ -37,6 +37,14 @@ RSpec.describe 'Markdown keyboard shortcuts', :js do
       expect(markdown_field.value).to eq('_italic_')
     end
 
+    it 'strikes text when <modifier>+<shift>+x is pressed' do
+      type_and_select('strikethrough')
+
+      markdown_field.send_keys([modifier_key, :shift, 'x'])
+
+      expect(markdown_field.value).to eq('~~strikethrough~~')
+    end
+
     it 'links text when <modifier>+K is pressed' do
       type_and_select('link')
 
diff --git a/spec/features/merge_request/user_sees_diff_spec.rb b/spec/features/merge_request/user_sees_diff_spec.rb
index 7cd9ef80874..03f67669061 100644
--- a/spec/features/merge_request/user_sees_diff_spec.rb
+++ b/spec/features/merge_request/user_sees_diff_spec.rb
@@ -69,7 +69,7 @@ RSpec.describe 'Merge request > User sees diff', :js do
     end
 
     context 'as user who needs to fork' do
-      it 'shows fork/cancel confirmation', :sidekiq_might_not_need_inline do
+      it 'shows fork/cancel confirmation', :sidekiq_might_not_need_inline, quarantine: 'https://gitlab.com/gitlab-org/gitlab/-/issues/337477' do
         sign_in(user)
         visit diffs_project_merge_request_path(project, merge_request)
 
diff --git a/spec/frontend/vue_shared/components/markdown/field_spec.js b/spec/frontend/vue_shared/components/markdown/field_spec.js
index 0c5ccb34eef..b5daa389fc6 100644
--- a/spec/frontend/vue_shared/components/markdown/field_spec.js
+++ b/spec/frontend/vue_shared/components/markdown/field_spec.js
@@ -76,7 +76,7 @@ describe('Markdown field component', () => {
   const getPreviewLink = () => subject.findByTestId('preview-tab');
   const getWriteLink = () => subject.findByTestId('write-tab');
   const getMarkdownButton = () => subject.find('.js-md');
-  const getAllMarkdownButtons = () => subject.findAll('.js-md');
+  const getListBulletedButton = () => subject.findAll('.js-md[title="Add a bullet list"]');
   const getVideo = () => subject.find('video');
   const getAttachButton = () => subject.find('.button-attach-file');
   const clickAttachButton = () => getAttachButton().trigger('click');
@@ -185,7 +185,7 @@ describe('Markdown field component', () => {
       it('converts a line', async () => {
         const textarea = subject.find('textarea').element;
         textarea.setSelectionRange(0, 0);
-        const markdownButton = getAllMarkdownButtons().wrappers[5];
+        const markdownButton = getListBulletedButton();
         markdownButton.trigger('click');
 
         await nextTick();
@@ -195,7 +195,7 @@ describe('Markdown field component', () => {
       it('converts multiple lines', async () => {
         const textarea = subject.find('textarea').element;
         textarea.setSelectionRange(0, 50);
-        const markdownButton = getAllMarkdownButtons().wrappers[5];
+        const markdownButton = getListBulletedButton();
         markdownButton.trigger('click');
 
         await nextTick();
diff --git a/spec/frontend/vue_shared/components/markdown/header_spec.js b/spec/frontend/vue_shared/components/markdown/header_spec.js
index 61d9a2d31b4..9ffb9c6a541 100644
--- a/spec/frontend/vue_shared/components/markdown/header_spec.js
+++ b/spec/frontend/vue_shared/components/markdown/header_spec.js
@@ -46,6 +46,7 @@ describe('Markdown field header component', () => {
       const buttons = [
         'Add bold text (⌘B)',
         'Add italic text (⌘I)',
+        'Add strikethrough text (⌘⇧X)',
         'Insert a quote',
         'Insert suggestion',
         'Insert code',
diff --git a/spec/serializers/ci/pipeline_entity_spec.rb b/spec/serializers/ci/pipeline_entity_spec.rb
index 4d9ed9fc22f..808dc38f653 100644
--- a/spec/serializers/ci/pipeline_entity_spec.rb
+++ b/spec/serializers/ci/pipeline_entity_spec.rb
@@ -224,7 +224,8 @@ RSpec.describe Ci::PipelineEntity do
         end
 
         it 'makes atached flag true' do
-          expect(subject[:flags][:merge_request_pipeline]).to be_truthy
+          expect(subject[:flags][:merge_request_pipeline]).to be true
+          expect(subject[:flags][:merge_request]).to be true
         end
 
         it 'exposes source sha and target sha' do