[xyzzy_plugh]

Perhaps I'm missing something but what's special about Cloudflare here?

You can use a boatload of providers for automated DNS-01.

[buckle8017]

There's a relatively short list supported by certbot out of the box.

[throw0101a]

One tool that can be used in a deployment hook which supports the API of several dozen DNS providers:

* https://github.com/dns-lexicon/dns-lexicon

[justin_oaks]

The list of API integrations provided by the lego project looks quite impressive. https://go-acme.github.io/lego/dns/index.html