ref: 321418f22a4a94b87f01e1403a2f4a71106461fb
dir: /docs/content/en/showcase/letsencrypt/bio.md/
Let's Encrypt is a free, automated, and open certificate authority (CA), run for the public's benefit. It is a service provided by the [Internet Security Research Group (ISRG)](https://letsencrypt.org/isrg/).