How the ACME protocol automates certificate issuance
In 2015, only about 40% of websites used HTTPS. Today HTTPS is used over 95% of the time. The ACME protocol made that shift possible. The Automatic Certificate Management Environment (ACME) protocol enables software to automatically prove domain control to a certificate authority without any human involvement. No more generating CSRs by hand. No more copy-pasting into web forms. No more waiting for validation emails. ACME largely solved certificate issuance.