# What is PKI? Certificates, CAs, and HTTPS Explained

**URL:** <https://community.infisical.com/t/what-is-pki-certificates-cas-and-https-explained/45>\
**Category:** Videos and Guides\
**Created:** [September 3, 2026, 12:35am UTC](https://community.infisical.com/t/what-is-pki-certificates-cas-and-https-explained/45 "2026-09-03T00:35:33Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![Jake-Infisical](https://yyz2.discourse-cdn.com/flex048/user_avatar/community.infisical.com/jake-infisical/32/40_2.png) [@Jake-Infisical](https://community.infisical.com/u/Jake-Infisical)\
**Post date:** [September 3, 2026, 12:35am UTC](https://community.infisical.com/t/what-is-pki-certificates-cas-and-https-explained/45/1 "2026-09-03T00:35:33Z")

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**What it covers:** A from-scratch explainer of public key infrastructure: what certificates actually are, what a CA does, and how HTTPS ties it together. No Infisical knowledge required.

[![](https://canada1.discourse-cdn.com/flex048/uploads/infisical1/original/1X/583d84984e253849a08577614ad256e8747c3d27.jpeg "What is PKI? Certificates, CAs, and HTTPS, Explained") ](https://www.youtube.com/watch?v=3_qPzNX4Z8E)

_Questions? Reply below._