# How Fern runs multi\-tenant docs for Webflow and ElevenLabs on Vercel 

**Published:** June 9, 2026 | **Authors:** Eric Dodds | **Category:** Customer stories

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## Fern on Vercel

- 3x faster time to first byte
- Page load times reduced by 80%
- 6 million+ page views per month from 1 million+ unique visitors
- 65% of the platform migrated from Pages Router to App Router in 7 days

Fern helps companies ship developer documentation and SDKs, running customer docs for Webflow, ElevenLabs, and others across custom domains from a single Next.js app on Vercel. Mid-migration from the Pages Router to the App Router, the team moved 65% of the platform in seven days instead of taking on a months-long engineering project. Today Fern deploys multiple times a day, with deploys down to five minutes and page load times cut by up to 80%.

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