Setting up Google Analytics (GA4) with Google Tag Manager (GTM)

1. Set Up GA4 Property in Google Analytics

• Go to Google Analytics.
• Click on Admin (gear icon in the bottom-left corner).
• Under Account, select your account or create a new one.
• Under Property, click Create Property and choose Google Analytics 4.
• Follow the setup prompts, inputting basic details like:
  • Property name
  • Reporting time zone
  • Currency
• Click Next and complete the process.

2. Get the Measurement ID from GA4

• In your newly created GA4 property, navigate to Admin > Data Streams.
• Click on the data stream for your website (or create a new one if not done yet).
• Copy the Measurement ID (e.g., G-XXXXXXX) shown at the top-right of the data stream settings.

3. Access Google Tag Manager (GTM)

• Log in to Google Tag Manager.
• Select the container linked to the website where GA4 will be implemented.

4. Create a GA4 Configuration Tag

• In GTM, click Tags from the left-side menu.
• Click the New button to create a new tag.
• Click on Tag Configuration, then select Google Analytics > Google Tag.
• Paste the Measurement ID you copied earlier into the field (TAG ID = Measurement ID).
• Optional: Configure advanced settings like event deduplication or user properties if needed.

5. Preview and Test the Setup

• Click the Preview button in GTM to test your setup.
• Enter your website's URL in the preview mode pop-up and start the debugging session.
• Navigate your website and check if the GA4 tag fires properly in the GTM Tag Assistant debugger.

6. Publish the GTM Container

• After testing, go back to GTM and click Submit.
• Add a version name and description for the changes (e.g., "GA4 Installation").
• Click Publish to deploy the tag live.

7. Verify Data in Google Analytics

• Go to your GA4 property and navigate to Reports > Realtime.
• Visit your website and ensure data appears in the realtime report.