> ## Documentation Index
> Fetch the complete documentation index at: https://mintlify.com/nuxt/nuxt/llms.txt
> Use this file to discover all available pages before exploring further.

# Migration Overview

> Migrate your Nuxt 2 app to Nuxt 3 with this comprehensive guide covering Vue 3, Vite, and Nitro.

Nuxt 3 is a complete rewrite of Nuxt 2, based on a new set of underlying technologies. There are significant changes when migrating a Nuxt 2 app to Nuxt 3, although you can expect migration to become more straightforward as we move toward a stable release.

<Note>
  This migration guide is under progress to align with the development of Nuxt 3.
</Note>

## Major Changes

Some of these significant changes include:

1. **Moving from Vue 2 to Vue 3** - Including defaulting to the Composition API and script setup.
2. **Moving from webpack 4 and Babel to Vite or webpack 5 and esbuild** - Faster builds and improved developer experience.
3. **Moving from a runtime Nuxt dependency to a minimal, standalone server** - Compiled with nitropack.

<Tip>
  If you need to remain on Nuxt 2, but want to benefit from Nuxt 3 features in Nuxt 2, you can alternatively check out [how to get started with Bridge](/bridge/overview).
</Tip>

## What to Expect

The migration process involves updating your:

* Configuration files and module setup
* Component structure and syntax
* Auto-imports and composables
* Pages, layouts, and routing
* Runtime configuration and environment variables
* Meta tags and SEO setup
* Plugins and middleware

## Next Steps

Start your migration journey by learning about the differences in:

* [Configuration](/migration/configuration) - Update your `nuxt.config` file
* [Auto-imports](/migration/auto-imports) - Understand automatic component and composable imports
* [Pages and Layouts](/migration/pages-and-layouts) - Migrate your routing and layout structure
* [Runtime Config](/migration/runtime-config) - Handle environment variables properly
* [Meta Tags](/migration/meta) - Update your SEO and meta tag management
* [Plugins and Middleware](/migration/plugins-and-middleware) - Modernize your plugins and route middleware