> ## Documentation Index > Fetch the complete documentation index at: https://inertiajs.com/docs/llms.txt > Use this file to discover all available pages before exploring further. # Introduction You are viewing the documentation for Inertia.js v2. Inertia.js v3 has been released and is now the default version. Please visit the [upgrade guide](/v3/getting-started/upgrade-guide) to get started. Inertia is a new approach to building classic server-driven web apps. We call it the modern monolith. Inertia allows you to create fully client-side rendered, single-page apps, without the complexity that comes with modern SPAs. It does this by leveraging existing server-side patterns that you already love. Inertia has no client-side routing, nor does it require an API. Simply build controllers and page views like you've always done! Inertia works great with any backend framework, but it's fine-tuned for [Laravel](https://laravel.com). ## Not a Framework Inertia isn't a framework, nor is it a replacement for your existing server-side or client-side frameworks. Rather, it's designed to work with them. Think of Inertia as glue that connects the two. Inertia does this via adapters. We currently have three official client-side adapters (React, Vue, and Svelte) and four server-side adapters (Laravel, Rails, Phoenix, and Django). ## Next Steps Want to learn a bit more before diving in? Check out the [who is it for](/v2/core-concepts/who-is-it-for) and [how it works](/v2/core-concepts/how-it-works) pages. Or, if you're ready to get started, jump right into the [installation instructions](/v2/installation/server-side-setup).