Delegated DNS validation: proving domain ownership without exposing credentials
It seems like every service wants proof you control your domain. Certificate authorities need it to issue certificates. Email platforms need it to authorize sending. Analytics needs it to gather data. Just add this magic TXT record to your DNS, wait for propagation, click verify. It works fine when it’s a one-time setup, but certificate lifetimes are dropping to 47 days, and you won’t be able to keep up on that schedule.