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better-auth/docs/content/docs/introduction.mdx
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---
title: Introduction
description: Introduction to Better Auth.
---
Better Auth is a framework-agnostic authentication and authorization framework for TypeScript. It provides a comprehensive set of features out of the box and includes a plugin ecosystem that simplifies adding advanced functionalities. Whether you need 2FA, multi-tenancy, multi-session support, or even enterprise features like SSO, it lets you focus on building your application instead of reinventing the wheel.
## Why Better Auth?
*Authentication in the TypeScript ecosystem has long been a half-solved problem. Other open-source libraries often require a lot of additional code for anything beyond basic authentication features. Rather than just pushing third-party services as the solution, I believe we can do better as a community—hence, Better Auth.*
## Features
Better Auth aims to be the most comprehensive auth library. It provides a wide range of features out of the box and allows you to extend it with plugins. Here are some of the features:
<Features/>
...and much more!
## LLMs.txt
Better Auth provides an LLMs.txt file that helps AI models understand how to interact with your authentication system. You can find it at [https://better-auth.com/llms.txt](https://better-auth.com/llms.txt).