New Google Assistant integration on the UI - what is it for?

I’ve been using Google Assistant together with my Home Assistant pretty much since I started using HA a few years ago.
In the last couple of days my Home Assistant was struggling to connect to my HASSIO (the typical "could not reach ") and while I was looking for anything on HA that could help to solve it, I found that the Integrations area now has a Google Assistant entry with my Google Actions project listed.

What is this integration about? Is it just the GUI version of the google_assistant integration, or is it something else? And what’s the point of having something that does not have any config (just a Synchronize devices that doesn’t seem to do anything other than a 404 error)?