How this fast-growing startup built a documentation platform with thousands of custom domains on Vercel. Products Used Mintlify , a platform for public documentation, is a toolkit for developers to write, maintain and host documentation. The platform offers a flexible solution that can be used out of the box or customized to fit specific needs, enabling developers to create help guides, tutorials, and API references. Link to heading Vercel: The foundation for scalable documentation Mintlify has experienced rapid growth, onboarding thousands of users and seeing widespread adoption among Y Combinator startups. To support this growth, Mintlify relies on Vercel and Next.js to power its platform. Starting out, Mintlify faced scalability challenges with a single static Next.js app that they were cloning repeatedly which also lacked multitenancy capabilities. With Vercel, Mintlify was able to serve multiple customers across different subdomains or custom domains with a single unified codebase.…