@esqew thank you for your comments

Deploying an Angular app to Azure App Service through IntelliJ is not possible because when I select the Angular project in the Artifact, it takes the Angular files with the Java runtime version.

So, it’s not possible to deploy angular app to azure through IntelliJ Idea. Instead, I deployed the angular app to azure through GitHub.

• I Push the Angular files to GitHub repository.
• I Selected GitHub as Source in the Deployment section of the Azure Web app.

• I Sign in to GitHub and I fill the Required Details as shown below.

• I used Authentication type to Basic authentication, but you can use User assigned identity.

• For Basic authentication I enabled the SCM Basic Auth Publishing.

Below is my GitHub Workflow File:

name: Build and deploy Node.js app to Azure Web App - kaangularapp6
on:
  push:
    branches:
      - main
  workflow_dispatch:
jobs:
  build:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4
      - name: Set up Node.js version
        uses: actions/setup-node@v3
        with:
          node-version: '18.x'
      - name: npm install, build
        run: |
          npm install
          npm run build 
      - name: Zip artifact for deployment
        run: zip release.zip ./* -r
      - name: Upload artifact for deployment job
        uses: actions/upload-artifact@v4
        with:
          name: node-app
          path: release.zip
  deploy:
    runs-on: ubuntu-latest
    needs: build
    environment:
      name: 'Production'
      url: ${{ steps.deploy-to-webapp.outputs.webapp-url }}
    steps:
      - name: Download artifact from build job
        uses: actions/download-artifact@v4
        with:
          name: node-app
      - name: Unzip artifact for deployment
        run: unzip release.zip
      - name: 'Deploy to Azure Web App'
        id: deploy-to-webapp
        uses: azure/webapps-deploy@v3
        with:
          app-name: 'kaangularapp6'
          slot-name: 'Production'
          package: .
          publish-profile: ${{ secrets.AZUREAPPSERVICE_PUBLISHPROFILE_<key> }}

It is Successfully Deployed to Azure App Service.

I added the below command to the Startup Command in the Configuration section of Azure Web App.

pm2 serve /home/site/wwwroot/dist/<WebAppName>/browser --no-daemon --spa

Azure App Service Output: