A fullstack template for building multi-tenant applications with custom domains using Next.js App Router, Vercel Postgres, and the Vercel Domains API.

Link to headingMulti-tenant apps in days, not months

Here's an example code snippet demonstrating how to use it within Next.js:

import { geolocation } from '@vercel/functions';
export function GET(request: Request) {
  const { city } = geolocation(request);
  return new Response(`<h1>Your location is ${city}</h1>`, {
    headers: { 'content-type': 'text/html' },
  });
}

In the above example, we import the geolocation helper from @vercel/edge.

The Platforms Starter Kit comes with powerful features that lets you build multi-tenant apps in record time.

1. Multi-tenancy: Programmatically assign unlimited custom domains, subdomains, and SSL certificates to your users using the Vercel Domains API

2. Performance: Fast & beautiful blog posts cached via Vercel's Edge Network, with the ability to invalidate the cache on-demand (when users make changes) using Incremental Static Regeneration + Next.js' revalidateTag API

3. AI Editor: AI-powered Markdown editor for a Notion-style writing experience powered by Novel

4. Image Uploads: Drag & drop / copy & paste image uploads, backed by Vercel Blob

5. Custom styles: Custom fonts, 404 pages, favicons, sitemaps for each site via the Next.js file-based Metadata API

6. Dynamic OG Cards: Each blog post comes with a dynamic OG image powered by @vercel/og

7. Dark Mode: For a better user experience at night

Link to headingWhat is a multi-tenant application?

Multi-tenant applications serve multiple customers across different subdomains/custom domains with a single unified codebase.

Take our demo app as an example:

• Subdomain: demo.vercel.pub

• Custom domain: platformize.co (maps to demo.vercel.pub)

• Editing & publishing backend: app.vercel.pub

Another example is Hashnode, a popular blogging platform. Each writer has their own unique .hashnode.dev subdomain for their blog:

Users can also map custom domains to their .hashnode.dev subdomain:

With the Platforms Starter Kit on Vercel Pro, you can offer unlimited custom domains at no extra cost to your customers as a premium feature, without having to worry about custom nameservers or configuring SSL certificates.

Link to headingBuild for scale

A year ago, we launched the first version of this starter kit to make it easier for makers to start their own platform on Vercel.

Since then, we've seen a variety of successful platforms grow to tens of thousands of custom domains and millions of pageviews on Vercel:

Link to headingBuild the platform of your dreams

It's been incredible to see the amount of love the template has gotten since it's inception.

Just stumbled upon the Vercel Platform Starter Kit. Game changer for anyone who wants to quickly create a multi-tenant app that enables user custom domains.

Perry Raskin, CoverDash

With the new version – now built with the App Router – we cannot wait to see what platforms you build on Vercel!