Deploying a Next.js 15 App with App Router on Deployxa: Complete Guide

Deploying a Next.js 15 App with App Router on Deployxa

Next.js 15 with the App Router is the most popular React framework in 2026, and it is the default choice for AI-generated full-stack apps. The App Router introduced server components, streaming, and improved data fetching, which make it powerful but also complex to deploy correctly. Deployxa's zero-config engine handles the Next.js 15 deployment automatically, detecting the framework and configuring the build, start, and routing. Here is how to deploy a Next.js 15 app with the App Router on Deployxa.

The direct answer is that Deployxa auto-detects Next.js 15 from your package.json (which includes next) and your app/ directory (which indicates the App Router). It configures the build and start commands: the build command is npm run build, the start command is npm start, and the port is configured via the PORT environment variable. The AutoRepairService handles missing dependencies, the localhost rewriter fixes hardcoded URLs, and the build resilience injector bypasses ESLint and TypeScript strictness. You do not write a Dockerfile, and the platform handles all the configuration. For more on Next.js deployment, see our article on why AI-generated Next.js apps fail to build.

Why Next.js 15 Is the Default for AI-Generated Apps

Three reasons explain why Next.js 15 is the default for AI-generated apps. First, it is the most popular React framework, which means the LLM's training data is dominated by Next.js examples, making code generation more reliable. Second, the App Router's server components and streaming provide excellent performance and UX, which means the generated apps are fast out of the box. Third, the App Router's file-based routing and built-in data fetching simplify the code, which means the LLM can generate clean, correct code with minimal guidance. For more on React deployment, see our article on fixing module not found in Vite + React apps.

The Architecture: Next.js 15 + Node Server + Container

Here is how Deployxa deploys a Next.js 15 app.

The Next.js container

The ingestion service detects Next.js 15 from your package.json and app/ directory. It configures the build and start commands:

• Build command: npm run build
• Start command: npm start (which runs next start)
• Runtime: Node 20

The App Router configuration

Next.js 15's App Router uses server components by default, which means the app needs a running Node server (not just static files). Deployxa's persistent containers are perfect for this, because they provide a long-running process that handles server-side rendering.

The reverse proxy

Traefik v3 routes traffic from your custom domain to the Next.js container, with automatic SSL via Let's Encrypt.

Step-by-Step: Deploying a Next.js 15 App

Here is the exact workflow for a typical Cursor-generated Next.js 15 app.

Step 1: Create your Next.js 15 app

npx create-next-app@latest my-app --app --typescript --tailwind --eslint
cd my-app

Step 2: Create a server component

// app/page.tsx
import { Suspense } from 'react';

async function getUsers() {
  const res = await fetch('https://jsonplaceholder.typicode.com/users');
  return res.json();
}

async function UserList() {
  const users = await getUsers();
  return (
    

      {users.map((user: any) => (
        
{user.name} ({user.email})
      ))}
    
  );
}

export default function Home() {
  return (
    

      
Users
      Loading...