Cloudflare is implementing a feature that encrypts your Server Name Indication (SNI). The new technology will be called ESNI.
But, today, as HTTPS covers nearly 80% of all web traffic, the fact that SNI leaks every site you go to online to your ISP and anyone else listening on the line has become a glaring privacy hole. Knowing what sites you visit can build a very accurate picture of who you are, creating both privacy and security risks.
This is a big change. Basically it will stop ISPs, rogue apps, and advertising companies from collecting and selling your browsing history. ESNI will hide the identities of the websites you visit.
Check It Out: Cloudflare Works to Make the Web More Private With ESNI