diff --git a/.github/workflows/web-sync-server-deploy.yml b/.github/workflows/web-sync-server-deploy.yml
index 41bf53ee6..24157226a 100644
--- a/.github/workflows/web-sync-server-deploy.yml
+++ b/.github/workflows/web-sync-server-deploy.yml
@@ -1,22 +1,28 @@
 name: Web Sync Server deploy
+
 on:
   push:
     branches:
       - main
     paths:
-      - '.github/workflows/web-sync-server*'
-      - 'moon/apps/sync-server/**'
-      - 'moon/packages/editor/**'
-      - 'moon/packages/config/**'
-      - 'moon/packages/types/**'
-
+      - ".github/workflows/web-sync-server*"
+      - "moon/apps/sync-server/**"
+      - "moon/packages/editor/**"
+      - "moon/packages/config/**"
+      - "moon/packages/types/**"
 
 concurrency:
   group: ${{ github.workflow }}-${{ github.ref }}
   cancel-in-progress: true
 
+env:
+  REGISTRY_ALIAS: m8q5m4u3
+  REPOSITORY: mega/web-sync-server
+  IMAGE_TAG: latest
+  GCP_PROJECT_ID: infra-20250121-20260121-0235
+
 jobs:
-  web-sync-server-deploy:
+  build-and-push:
     runs-on: ubuntu-latest
     timeout-minutes: 10
     steps:
@@ -25,7 +31,7 @@ jobs:
 
       - uses: actions/setup-node@v4
         with:
-          node-version: '20'
+          node-version: "20"
 
       - name: Configure AWS Credentials
         uses: aws-actions/configure-aws-credentials@v4
@@ -40,26 +46,86 @@ jobs:
         with:
           registry-type: public
 
+      - name: Auth to GCP
+        uses: google-github-actions/auth@v2
+        with:
+          credentials_json: ${{ secrets.GCP_SA_KEY }}
+
+      - name: Configure docker for GCP
+        run: gcloud auth configure-docker us-central1-docker.pkg.dev
+
       - name: Build, tag, and push docker image to Amazon ECR Public
         working-directory: moon
         env:
           REGISTRY: ${{ steps.login-ecr-public.outputs.registry }}
-          REGISTRY_ALIAS: m8q5m4u3
-          REPOSITORY: mega/web-sync-server
-          IMAGE_TAG: latest
         run: |
+          set -euo pipefail
+
+          AWS_IMAGE_BASE="$REGISTRY/${{ env.REGISTRY_ALIAS }}/${{ env.REPOSITORY }}"
+          GCP_IMAGE_BASE="us-central1-docker.pkg.dev/${{ env.GCP_PROJECT_ID }}/${{ env.REPOSITORY }}"
+          IMAGE_TAG="${{ env.IMAGE_TAG }}"
+
           docker build \
             -f apps/sync-server/Dockerfile \
-            -t $REGISTRY/$REGISTRY_ALIAS/$REPOSITORY:$IMAGE_TAG .
-          docker push $REGISTRY/$REGISTRY_ALIAS/$REPOSITORY:$IMAGE_TAG
+            -t "$AWS_IMAGE_BASE:$IMAGE_TAG" .
+
+          # Push to AWS ECR Public
+          docker push "$AWS_IMAGE_BASE:$IMAGE_TAG"
 
+          # Tag and push to GCP Artifact Registry
+          docker tag "$AWS_IMAGE_BASE:$IMAGE_TAG" "$GCP_IMAGE_BASE:$IMAGE_TAG"
+          docker push "$GCP_IMAGE_BASE:$IMAGE_TAG"
+
+  deploy-aws:
+    needs: build-and-push
+    if: ${{ github.repository == 'web3infra-foundation/mega' }}
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        include:
+          - cluster: gitmega-com
+            service: mega-web-sync-server-dev-service-v3hdlyk8
+          # TODO: update service name to actual gitmono sync server ECS service
+          - cluster: gitmono-com-mega-app
+            service: mega-web-sync-service
+    steps:
       - name: Force ECS redeploy
         run: |
           aws ecs update-service \
-            --cluster gitmega-com \
-            --service mega-web-sync-server-dev-service-v3hdlyk8 \
+            --cluster ${{ matrix.cluster }} \
+            --service ${{ matrix.service }} \
             --force-new-deployment
         env:
           AWS_REGION: ap-southeast-2
           AWS_ACCESS_KEY_ID: ${{ secrets.AWS_ACCESS_KEY_ID }}
           AWS_SECRET_ACCESS_KEY: ${{ secrets.AWS_SECRET_ACCESS_KEY }}
+
+  deploy-gcp:
+    needs: build-and-push
+    if: ${{ github.repository == 'web3infra-foundation/mega' }}
+    runs-on: ubuntu-latest
+    steps:
+      - name: Auth to GCP
+        uses: google-github-actions/auth@v2
+        with:
+          credentials_json: ${{ secrets.GCP_SA_KEY }}
+
+      - name: Deploy to Cloud Run (force new revision)
+        env:
+          REGION: asia-east1
+          SERVICE_NAME: buck2hub-notesync
+        run: |
+          set -euo pipefail
+
+          IMAGE=$(gcloud run services describe "$SERVICE_NAME" \
+            --project "$GCP_PROJECT_ID" \
+            --region "$REGION" \
+            --format="value(spec.template.spec.containers[0].image)")
+
+          echo "Current image: $IMAGE"
+
+          gcloud run deploy "$SERVICE_NAME" \
+            --image "$IMAGE" \
+            --region "$REGION" \
+            --project "$GCP_PROJECT_ID" \
+            --quiet
diff --git a/moon/apps/sync-server/.env.buck2hub b/moon/apps/sync-server/.env.buck2hub
deleted file mode 100644
index 1b89de60a..000000000
--- a/moon/apps/sync-server/.env.buck2hub
+++ /dev/null
@@ -1,4 +0,0 @@
-# Buck2Hub Environment
-API_URL=https://api.buck2hub.com
-PORT=9000
-NODE_ENV=production
diff --git a/moon/apps/sync-server/.env.demo b/moon/apps/sync-server/.env.demo
deleted file mode 100644
index a5d7401ce..000000000
--- a/moon/apps/sync-server/.env.demo
+++ /dev/null
@@ -1,4 +0,0 @@
-# Demo Environment
-API_URL=http://api.gitmono.local:8080
-PORT=9000
-NODE_ENV=development
diff --git a/moon/apps/sync-server/.env.example b/moon/apps/sync-server/.env.example
deleted file mode 100644
index dc7826f1d..000000000
--- a/moon/apps/sync-server/.env.example
+++ /dev/null
@@ -1,10 +0,0 @@
-# API Configuration
-API_URL=https://api.gitmega.com
-
-# Server Configuration
-PORT=9000
-NODE_ENV=development
-
-# Sentry Configuration (optional)
-# SENTRY_DSN=
-# SENTRY_AUTH_TOKEN=
diff --git a/moon/apps/sync-server/.env.gitmono b/moon/apps/sync-server/.env.gitmono
deleted file mode 100644
index 18fd83184..000000000
--- a/moon/apps/sync-server/.env.gitmono
+++ /dev/null
@@ -1,4 +0,0 @@
-# Gitmono Environment
-API_URL=https://api.gitmono.com
-PORT=9000
-NODE_ENV=production
diff --git a/moon/apps/sync-server/.env.openatom b/moon/apps/sync-server/.env.openatom
deleted file mode 100644
index 83708a419..000000000
--- a/moon/apps/sync-server/.env.openatom
+++ /dev/null
@@ -1,4 +0,0 @@
-# OpenAtom Environment
-API_URL=https://api.xuanwu.openatom.cn
-PORT=9000
-NODE_ENV=production
diff --git a/moon/apps/sync-server/.env.staging b/moon/apps/sync-server/.env.staging
deleted file mode 100644
index 678e18ca2..000000000
--- a/moon/apps/sync-server/.env.staging
+++ /dev/null
@@ -1,4 +0,0 @@
-# Staging Environment
-API_URL=https://api.gitmega.com
-PORT=9000
-NODE_ENV=production
diff --git a/moon/apps/sync-server/.env.staging-nju b/moon/apps/sync-server/.env.staging-nju
deleted file mode 100644
index 4865f1866..000000000
--- a/moon/apps/sync-server/.env.staging-nju
+++ /dev/null
@@ -1,4 +0,0 @@
-# Staging NJU Environment
-API_URL=http://api.gitmega.nju:8080
-PORT=9000
-NODE_ENV=development
diff --git a/moon/apps/sync-server/src/config.ts b/moon/apps/sync-server/src/config.ts
index 0dcebe676..57fba06f9 100644
--- a/moon/apps/sync-server/src/config.ts
+++ b/moon/apps/sync-server/src/config.ts
@@ -1,21 +1,12 @@
-import * as path from 'path'
 import * as dotenv from 'dotenv'
 
-// Load environment-specific .env file
-// Priority: .env.{NODE_ENV} > .env.local > .env
-const envFile = process.env.NODE_ENV ? `.env.${process.env.NODE_ENV}` : '.env.local'
+const NODE_ENV = process.env.NODE_ENV || 'development'
 
-dotenv.config({ path: path.resolve(process.cwd(), envFile) })
-
-// Fallback to .env.local if environment-specific file doesn't exist
-if (process.env.NODE_ENV && !process.env.API_URL) {
-  dotenv.config({ path: path.resolve(process.cwd(), '.env.local') })
+// In non-production environments, load variables from .env.local for local development.
+if (NODE_ENV !== 'production') {
+  dotenv.config({ path: '.env.local' })
 }
 
-// API URL - read from environment variable with fallback default
-export const API_URL = process.env.API_URL || 'https://api.gitmega.com'
-
-// Server Configuration
+export const API_URL = process.env.API_URL
 export const PORT = parseInt(process.env.PORT || '9000', 10)
-export const NODE_ENV = process.env.NODE_ENV || 'development'
 export const IS_PRODUCTION = NODE_ENV === 'production'