[dextercd]

This adds a new validation method that people can use if they want. The existing validation methods (https://letsencrypt.org/docs/challenge-types/) aren't going away, so your current setup will keep working.

[jsheard]

And to elaborate, the reasons you might want to use a DNS challenge are to acquire wildcard certificates, or to acquire regular certificates on a machine or domain which isn't directly internet-facing. If neither of those apply to you then the regular HTTP/TLS methods are fine.

[newsoftheday]

OK I was sort of thinking that might be the case but wanted to make sure in case I had to start prepping now, thanks. We use no wildcard domains today, maybe down the road.

[newsoftheday]

This is good news, not sure I got that from reading the article but even if I had to do it, it wouldn't be the end of the world I guess.