DNS-PERSIST-01 validates a domain once to get certificates forever
With the ACME protocol, to issue a certificate you have to prove you control the domain. The CA gives you a challenge, you complete it, and they issue your cert. The trouble is that every validation method has tradeoffs. And as certificate lifetimes get shorter, those tradeoffs will get more painful. DNS-PERSIST-01 is a new approach coming in 2026 that trades proof-of-freshness for easier operations.