ref: 288c39643906b4194a0a6acfbaf87cb0fbdeb361
dir: /docs/content/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/).