diff --git a/.github/lychee.toml b/.github/lychee.toml
new file mode 100644
index 00000000000..ce2cad4b805
--- /dev/null
+++ b/.github/lychee.toml
@@ -0,0 +1,80 @@
+# .github/lychee.toml
+
+############################# Display #############################
+# Verbose program output
+# Accepts log level: "error", "warn", "info", "debug", "trace"
+verbose = "info"
+
+# Don't show interactive progress bar while checking links.
+no_progress = true
+
+############################# Cache ###############################
+# Enable link caching. This can be helpful to avoid checking the same links on
+# multiple runs.
+cache = false
+
+############################# Runtime #############################
+# Maximum number of concurrent link checks.
+max_concurrency = 12
+
+# Maximum number of allowed redirects.
+max_redirects = 5
+
+# Maximum number of allowed retries before a link is declared dead.
+max_retries = 1
+
+############################# Requests ############################
+# Website timeout from connect to response finished.
+timeout = 10
+
+# Minimum wait time in seconds between retries of failed requests.
+retry_wait_time = 1
+
+# Accept more status codes (follow redirects automatically)
+accept = ["200..=204", "301..=308", "429"]
+
+# Avoid false fragment errors
+include_fragments = false  
+
+# Only test links with the given schemes (e.g. https).
+# Omit to check links with any other scheme.
+# At the moment, we support http, https, file, and mailto.
+scheme = ["https"]
+
+# When links are available using HTTPS, treat HTTP links as errors.
+require_https = false
+
+# Fallback extensions to apply when a URL does not specify one.
+# This is common in documentation tools that cross-reference files without extensions.
+fallback_extensions = ["md", "html"]
+
+############################# Exclusions ##########################
+# Exclude URLs and mail addresses from checking (supports regex).
+exclude = [
+  '^mailto:',
+  '^https?://localhost',
+  '^https?://127\\.0\\.0\\.1',
+  '^https://www\.linkedin\.com',
+  '^https?://issues\.umbraco\.org/',
+  '^https?://web\\.archive\\.org/web/'
+]
+
+# Exclude these filesystem paths from getting checked.
+exclude_path = [
+  '(^|/)node_modules/',
+  '(^|/)dist/',
+  '(^|/)bin/',
+  '\\.txt$',      # skip .txt extensions
+  '(^|/)test/'   # skip directories named "test"
+]
+
+# URLs to check (supports regex). Has preference over all excludes.
+include = ['gist\.github\.com.*']
+
+# Skip checking mail addresses
+include_mail = true
+
+############################# Content Checks ######################
+# Mark pages as broken if the body contains "page not found" or "404"
+[content]
+deny = ["(?i)page not found", "(?i)404"]
diff --git a/.github/workflows/check-pr-links.yml b/.github/workflows/check-pr-links.yml
new file mode 100644
index 00000000000..37afdb76362
--- /dev/null
+++ b/.github/workflows/check-pr-links.yml
@@ -0,0 +1,75 @@
+name: Check Links in Pull Requests
+
+on:
+  pull_request:
+    branches:
+      - main
+    paths:
+      - '**/*.md'
+
+jobs:
+  check-links:
+    runs-on: ubuntu-latest
+
+    steps:
+      # 1️⃣ Checkout the repository
+      - name: Checkout code
+        uses: actions/checkout@v4
+        with:
+          fetch-depth: 0
+
+      # 2️⃣ Get changed Markdown files in the PR
+      - name: Get changed Markdown files
+        id: changed-files
+        run: |
+          CHANGED_FILES=$(git diff --name-only ${{ github.event.pull_request.base.sha }} ${{ github.sha }} | grep '\.md$' || true)
+          CHANGED_FILES="${CHANGED_FILES//$'\n'/ }"   # replace newlines with spaces
+          echo "CHANGED_FILES=$CHANGED_FILES" >> $GITHUB_ENV
+          echo "Changed Markdown files: $CHANGED_FILES"
+
+      # 3️⃣ Skip if no Markdown files changed
+      - name: Skip if no changed Markdown files
+        if: env.CHANGED_FILES == ''
+        run: |
+          echo "No Markdown files changed. Skipping link check."
+          exit 0
+
+      # 4️⃣ Run Lychee on changed files (compact output)
+      - name: Run Lychee
+        id: run-lychee
+        uses: lycheeverse/lychee-action@v2
+        with:
+          args: |
+            --no-progress
+            --include-fragments
+            --format compact
+            ${{ env.CHANGED_FILES }}
+          output: lychee/out_raw.md
+          fail: false   # ✅ don't fail yet, let us capture output
+
+      # 5️⃣ Clean Lychee output (remove summary line + mark if has content)
+      - name: Clean Lychee output
+        id: clean-output
+        if: always()
+        run: |
+          grep -v '^🔍' lychee/out_raw.md > lychee/out.md || true
+          if [ -s lychee/out.md ]; then
+            echo "has_content=true" >> $GITHUB_OUTPUT
+          else
+            echo "has_content=false" >> $GITHUB_OUTPUT
+          fi
+
+      # 6️⃣ Comment broken links on PR
+      - name: Comment broken links
+        if: always() && (env.CHANGED_FILES != '') && (steps.clean-output.outputs.has_content == 'true')
+        uses: marocchino/sticky-pull-request-comment@v2
+        with:
+          path: lychee/out.md
+          recreate: true
+
+      # 7️⃣ Fail workflow if broken links are found
+      - name: Fail workflow if broken links
+        if: steps.clean-output.outputs.has_content == 'true'
+        run: |
+          echo "❌ Broken links detected. Please review the PR comment for details."
+          exit 1
diff --git a/.gitignore b/.gitignore
index 655ba93439d..946cb65a602 100644
--- a/.gitignore
+++ b/.gitignore
@@ -4,3 +4,4 @@
 *.orig
 .vscode
 .idea
+.lycheecache
diff --git a/.lycheeignore b/.lycheeignore
new file mode 100644
index 00000000000..c149333be85
--- /dev/null
+++ b/.lycheeignore
@@ -0,0 +1,31 @@
+# These links are ignored by lychee link checker: https://github.com/lycheeverse/lychee
+# The file allows you to list multiple regular expressions for exclusion (one pattern per line).
+# The `.lycheeignore` file is only used for excluding URLs, not paths. Use the `exclude_path` key in the `lychee.toml` file. ref: https://lychee.cli.rs/recipes/excluding-paths/
+
+# GitHub blob/tree fragment links
+^https://github\.com/umbraco/Umbraco-CMS/blob/.*/.*#L.*
+^https://github\.com/umbraco/Umbraco-CMS/tree/.*
+^https://github\.com/Shazwazza/Articulate/blob/.*/.*#L.*
+^https://github\.com/umbraco/Umbraco-CMS/blob/.*
+
+# Anchor/fragment links causing false positives
+^https://apidocs\.umbraco\.com/.*/#.*
+^https://tinymce\.github\.io/.*/#.*
+^https://openid\.net/.*/#.*
+^https://docs\.microsoft\.com/.*#.*
+^https://learn\.microsoft\.com/.*#.*
+^https://developer\.mozilla\.org/.*/#.*
+^https://learning\.postman\.com/docs/.*/#.*
+^https://nginx\.org/.*/#.*
+^https://azure\.microsoft\.com/en-gb/services/media-services/.*
+^https://www\.tiny\.cloud/docs/.*
+
+# TinyMCE anchors
+^https://github\.com/tinymce/tinymce/issues/.*#.*
+
+# NIST FIPS and other static docs
+^https://csrc\.nist\.gov/publications/PubsFIPS\.html#.*
+
+# Timeout-prone Umbraco issue links
+^https://issues\.umbraco\.org/issue/.*
+^https://issues\.umbraco\.org/issues/.*
diff --git a/16/umbraco-cms/fundamentals/code/source-control.md b/16/umbraco-cms/fundamentals/code/source-control.md
index 7b78737f58a..2da8a96152a 100644
--- a/16/umbraco-cms/fundamentals/code/source-control.md
+++ b/16/umbraco-cms/fundamentals/code/source-control.md
@@ -8,7 +8,7 @@ description: >-
 
 ## Umbraco Cloud
 
-When you are running your site on Umbraco Cloud, source control is a part of the experience. Have a look at the ['Technical overview of an Umbraco Cloud Environment'](https://docs.umbraco.com/umbraco-cloud/getting-started/environments) and the information on ['Working with your Umbraco Cloud project'](https://docs.umbraco.com/umbraco-cloud/setup/set-up#working-with-your-umbraco-cloud-project) for a steer on Source/Version Control good practices.
+When you are running your site on Umbraco Cloud, source control is a part of the experience. Have a look at the ['Technical overview of an Umbraco Cloud Environment'](https://docs.umbraco.com/umbraco-cloud/getting-started/environments). Additionally, look at ['Working with a Local Clone'](https://docs.umbraco.com/umbraco-cloud/build-and-customize-your-solution/handle-deployments-and-environments/working-locally) for a steer on Source/Version Control good practices.
 
 ## Outside of Umbraco Cloud
 
diff --git a/16/umbraco-cms/fundamentals/setup/upgrading/version-specific/upgrade-from-8-to-latest.md b/16/umbraco-cms/fundamentals/setup/upgrading/version-specific/upgrade-from-8-to-latest.md
index 8da11efdc80..49da82b82c6 100644
--- a/16/umbraco-cms/fundamentals/setup/upgrading/version-specific/upgrade-from-8-to-latest.md
+++ b/16/umbraco-cms/fundamentals/setup/upgrading/version-specific/upgrade-from-8-to-latest.md
@@ -43,7 +43,7 @@ A video tutorial guiding you through the steps of upgrading from version 8 to th
 If you use Umbraco Forms, make sure to have [`StoreUmbracoFormsInDbset`](https://docs.umbraco.com/umbraco-forms/developer/forms-in-the-database#enable-storing-forms-definitions-in-the-database)to `True` before **step 1**.
 {% endhint %}
 
-1. Create a backup of the database from your Umbraco 8 project (after you have upgraded to the latest version of v8). For this, you can use the [database backup guide](https://docs.umbraco.com/umbraco-cloud/databases/backups#backup-with-sql-server-management-studio).
+1. Create a backup of the database from your Umbraco 8 project (after you have upgraded to the latest version of v8). For this, you can use the [Database backups Guide](https://docs.umbraco.com/umbraco-cloud/build-and-customize-your-solution/set-up-your-project/databases/backups#restoring-a-cloud-backup-to-a-sql-server-database).
 2. Import the database backup into SQL Server Management Studio.
 3. Update the connection string in the new projects `appsettings.json` file so that it connects to the Umbraco 8 database:
 
diff --git a/16/umbraco-cms/implementation/controllers.md b/16/umbraco-cms/implementation/controllers.md
index ee1dd990a89..145db988aec 100644
--- a/16/umbraco-cms/implementation/controllers.md
+++ b/16/umbraco-cms/implementation/controllers.md
@@ -44,3 +44,5 @@ The Umbraco Backoffice API is also known as the Management API. Thus, a Backoffi
 ***
 
 {% include "../.gitbook/includes/umbraco-mvc-training-course.md" %}
+
+- [YouTube](https://www.youtube.com/watch?v=sh_AF---ZKJ)
\ No newline at end of file