ref: 5c9d5413a4e2cc8d44a8b2d7dff04e6523ba2a29
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/).