Here's a detailed overview of so called 'domain fronting' https://www.bamsoftware.com/papers/fronting/

Some VPNs use a module called obfsproxy which uses the fronting technique. One VPN service I recall using it is called Tunnelbear. You can read more about this feature here: https://help.tunnelbear.com/customer/en/portal/articles/2435...

This is not an endorsement of Tunnelbear, I just thought it would be noteworthy mentioning that VPN services offer this now to thwart censorship.