diff --git a/.github/workflows/automated-publish-docs.yaml b/.github/workflows/automated-publish-docs.yaml
new file mode 100644
index 0000000000..97c38ef47d
--- /dev/null
+++ b/.github/workflows/automated-publish-docs.yaml
@@ -0,0 +1,100 @@
+name: Automated-Publish-Docs
+
+on:
+  push:
+    branches:
+      - v*.*
+    paths-ignore:
+      - 'github/**'
+
+jobs:
+  env:
+    runs-on: ubuntu-latest
+    outputs:
+          CURRENT_BRANCH: ${{ steps.calculate-env.outputs.current_branch }}
+          NEWEST_VERSION: ${{ steps.calculate-env.outputs.newest_version }}
+          ALIAS: ${{ steps.calculate-env.outputs.alias }}
+          TITLE: ${{ steps.calculate-env.outputs.title }}
+          SLACK_CHANNEL: "docs-review"
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v4
+
+      - name: Get all v*.* branches
+        id: calculate-env
+        run: |
+          BRANCHES=$(git branch --list --all | grep -v master | grep 'origin/v*.*' | sed -n -E 's:.*/(v[0-9]+\.[0-9]+).*:\1:p' | sort -Vu)
+          NEWEST_VERSION=$(printf '%s\n' "${BRANCHES[@]}" | sort -V | tail -n 1)
+          CURRENT_BRANCH=${GITHUB_REF#refs/heads/}
+          ALIAS=$CURRENT_BRANCH-alias
+          TITLE=$(echo $CURRENT_BRANCH | cut -b 2-)
+          echo current_branch=$CURRENT_BRANCH >> $GITHUB_OUTPUT
+          echo newest_version=$NEWEST_VERSION >> $GITHUB_OUTPUT
+          echo alias=$ALIAS >> $GITHUB_OUTPUT
+          echo title=$TITLE >> $GITHUB_OUTPUT
+          
+          if [[ "$CURRENT_BRANCH" == "$NEWEST_VERSION" ]]; then
+            echo "Deploying $NEWEST_VERSION as latest..."
+          else
+            echo "Deploying $CURRENT_BRANCH which is not the latest version ( => $NEWEST_VERSION )..."
+            fi
+
+  install-dependencies-and-deploy:
+    name: Install Dependencies and Deploy
+    needs: [env]
+    runs-on: ubuntu-latest
+    steps:
+      - name: checkout latest
+        uses: actions/checkout@v4
+        with:
+          ref: ${{ needs.env.outputs.CURRENT_BRANCH }}
+          fetch-depth: 0
+
+      - name: setup python
+        uses: actions/setup-python@v5
+        with:
+          python-version: '3.9'
+          cache: 'pip' # caching pip dependencies
+
+      - name: install dependencies
+        run: |
+          pip3 install -r requirements.txt
+      
+      - name: Configure Git User
+        run: |
+          git config user.name "circleci-runai"
+          git config user.email "circleci-runai@run.ai"
+
+      - name: deploy mkdocs
+        run: |
+          if [[ "${{ needs.env.outputs.CURRENT_BRANCH }}" == "${{ needs.env.outputs.NEWEST_VERSION }}" ]]; then
+            echo "Deploying ${{ needs.env.outputs.NEWEST_VERSION }} as latest..."
+            mike list
+            git fetch origin gh-pages --depth=1
+            mike deploy ${{ needs.env.outputs.CURRENT_BRANCH }} ${{ needs.env.outputs.ALIAS }} latest --title=${{ needs.env.outputs.TITLE }} --push --update-aliases
+            mike set-default latest --push
+            mike list
+          else
+            echo "Deploying ${{ needs.env.outputs.CURRENT_BRANCH }} which is not the latest version ( => ${{ needs.env.outputs.NEWEST_VERSION }} )..."
+            mike list
+            git fetch origin gh-pages --depth=1
+            mike deploy ${{ needs.env.outputs.CURRENT_BRANCH }} ${{ needs.env.outputs.ALIAS }} --title=${{ needs.env.outputs.TITLE }} --push
+            mike list
+          fi
+
+  slack-notification:
+    name: Slack Notification
+    needs: [env, install-dependencies-and-deploy]
+    if: always()
+    runs-on: ubuntu-latest
+    steps:
+      - name: Slack Notification
+        uses: rtCamp/action-slack-notify@v2
+        env:
+          SLACK_WEBHOOK: ${{ secrets.SLACK_WEBHOOK }}
+          SLACK_COLOR: ${{ contains(needs.*.result, 'failure') && 'failure' || 'success' }}
+          SLACK_TITLE: "RunAI-Docs: Version ${{ needs.env.outputs.CURRENT_BRANCH }} Deployment ${{ contains(needs.*.result, 'failure') && 'failed' || 'completed successfully' }}"
+          SLACK_MESSAGE_ON_SUCCESS: "Docs were updated successfully for version ${{ needs.env.outputs.TITLE }}"
+          SLACK_MESSAGE_ON_FAILURE: "Docs update FAILED for version ${{ needs.env.outputs.TITLE }}"
+          MSG_MINIMAL: true
+          SLACK_FOOTER: ""
\ No newline at end of file
diff --git a/.github/workflows/ci.yml.old b/.github/workflows/ci.yml.old
deleted file mode 100644
index d2df9fef92..0000000000
--- a/.github/workflows/ci.yml.old
+++ /dev/null
@@ -1,30 +0,0 @@
-name: ci 
-on:
-  push:
-   branches:
-   - 'v*.*'
-
-jobs:
-  deploy:
-    runs-on: ubuntu-latest
-    steps:
-      - name: Extract branch name
-        shell: bash
-        run: echo "##[set-output name=branch;]$(echo ${GITHUB_REF#refs/heads/})"
-        id: extract_branch
-      - name: action checkout
-        uses: actions/checkout@v3
-      - name: Python step
-        uses: actions/setup-python@v4
-        with:
-          python-version: 3.x
-      - name: Cache setup  
-        uses: actions/cache@v2
-        with:
-          key: ${{ github.ref }}
-          path: .cache
-      - name: install requirements
-        run: pip3 install -r requirements.txt
-        # run: mkdocs gh-deploy --force
-      - name: Deploy using mike
-        run: mike deploy --push ${{ steps.extract_branch.outputs.branch }}
diff --git a/.github/workflows/create-preview-env-on-pr.yaml b/.github/workflows/create-preview-env-on-pr.yaml
new file mode 100644
index 0000000000..445e6ffbca
--- /dev/null
+++ b/.github/workflows/create-preview-env-on-pr.yaml
@@ -0,0 +1,79 @@
+name: Create Preview Environment on PR
+
+on:
+  pull_request:
+    types: [opened, reopened, synchronize, closed]
+    branches:
+      - master
+      - v*.*
+
+jobs:
+  build-and-deploy:
+    if: github.event.action != 'closed'
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v4
+
+      - name: setup python
+        uses: actions/setup-python@v5
+        with:
+          python-version: '3.9'
+          cache: 'pip' # caching pip dependencies
+
+      - name: install dependencies
+        run: |
+          pip3 install -r requirements.txt
+
+      - name: mkdocs-build-action
+        run: | 
+            mkdocs build
+
+      - name: Install AWS CLI
+        run: |
+          sudo apt-get update
+          sudo apt-get install awscli -y
+
+      - name: Sync S3 bucket for preview
+        env:
+          AWS_ACCESS_KEY_ID: ${{ secrets.AWS_ACCESS_KEY_ID }}
+          AWS_SECRET_ACCESS_KEY: ${{ secrets.AWS_SECRET_ACCESS_KEY }}
+          AWS_DEFAULT_REGION: ${{ secrets.AWS_DEFAULT_REGION }}
+        run: |
+          aws s3 sync ./site/ s3://${{ secrets.AWS_S3_BUCKET_NAME }}/PR-${{ github.event.number }} --delete
+
+      - name: Invalidate CloudFront cache
+        env:
+          AWS_ACCESS_KEY_ID: ${{ secrets.AWS_ACCESS_KEY_ID }}
+          AWS_SECRET_ACCESS_KEY: ${{ secrets.AWS_SECRET_ACCESS_KEY }}
+          AWS_DEFAULT_REGION: ${{ secrets.AWS_DEFAULT_REGION }}
+        run: |
+          aws cloudfront create-invalidation --distribution-id ${{ secrets.AWS_CLOUDFRONT_DISTRIBUTION_ID }} --paths "/PR-${{ github.event.number }}/*"
+
+      - name: Comment on PR with preview URL
+        uses: actions/github-script@v6
+        with:
+          script: |
+            github.rest.issues.createComment({
+              issue_number: context.issue.number,
+              owner: context.repo.owner,
+              repo: context.repo.repo,
+              body: `Preview environment URL: https://d161wck8lc3ih2.cloudfront.net/PR-${{ github.event.number }}/`
+            })
+
+  cleanup:
+    if: github.event.action == 'closed'
+    runs-on: ubuntu-latest
+    steps:
+      - name: Install AWS CLI
+        run: |
+          sudo apt-get update
+          sudo apt-get install awscli -y
+
+      - name: Remove PR directory from S3 bucket
+        env:
+          AWS_ACCESS_KEY_ID: ${{ secrets.AWS_ACCESS_KEY_ID }}
+          AWS_SECRET_ACCESS_KEY: ${{ secrets.AWS_SECRET_ACCESS_KEY }}
+          AWS_DEFAULT_REGION: ${{ secrets.AWS_DEFAULT_REGION }}
+        run: |
+          aws s3 rm s3://${{ secrets.AWS_S3_BUCKET_NAME }}/PR-${{ github.event.number }} --recursive
diff --git a/.github/workflows/deploy-staging.yaml b/.github/workflows/deploy-staging.yaml
index 4fadb8dbfe..feacb391d5 100644
--- a/.github/workflows/deploy-staging.yaml
+++ b/.github/workflows/deploy-staging.yaml
@@ -41,7 +41,7 @@ jobs:
           with:
             aws-access-key-id: ${{ secrets.AWS_ACCESS_KEY_ID }}
             aws-secret-access-key: ${{ secrets.AWS_SECRET_ACCESS_KEY }}
-            aws-region: us-east-1
+            aws-region: ${{ secrets.AWS_DEFAULT_REGION}}
 
         - name: Sync output to S3
           run: |