You can embed an entire webpage as an iframe in a new Google site. This will allow you to pull in content from other websites and Google tools like Apps Script, Data Studio, and App Maker, saving you the trouble of duplicating and updating that information on your page.
1. Copy the URL of the webpage you want to appear on your Sitel
2. Select "<> Embed"from the Insert menu.
3. Click on “By URL” .
4. Paste your destination URL into the box and click "insert".
5. Select "whole page" and "insert".
Note that this will only work if the webpage you’re trying to add allows embedding.