What is Google Sites?

Google Sites is essentially a drag-and-drop website builder for creating both public facing web pages and intranet sites that’s deeply integrated with the rest of Google’s tools. You can easily insert documents from Google Docs, Slides, Sheets and the rest of the (unfortunately named) G Suite tools into any site, for example. It also directly integrates with Google Analytics. The new sites now also allows multiple users to collaboratively edit a site (using the same tech the company also uses in Google Docs).

Site: https://sites.google.com/new