Case Study: Fern achieves secure, scalable user identity and better developer experience with Auth0

How Fern is growing securely with Auth0 and AWS

Fern helps teams deliver SDKs and API docs and needed a secure, scalable identity solution that could support growth, work with its AWS stack, and protect open-source documentation access. Fern turned to Auth0 to avoid building auth in-house and to improve the developer experience for its users.

Auth0 implemented social login with GitHub, OAuth 2.0-based access control, built-in security protections, and customizable branding, all integrated with Fern’s AWS environment. Fern had Auth0 up and running in 7 days, avoided months of in-house development, and saw 225% growth in daily logins in 2024–25, while also using Auth0 actions to support sales alerts and faster customer engagement.

Fern

Catherine Deskur

Deployed Engineer