silverstripe-framework/docs/en/02_Developer_Guides/15_Customising_the_Admin_Interface/index.md

---
title: Customising the Admin Interface
summary: Extend the admin view to provide custom behavior or new features for CMS and admin users.
introduction: The Admin interface can be extended to provide additional functionality to users and custom interfaces for managing data.
iconBrand: react
---

The Admin interface is bundled within the SilverStripe Framework but is most commonly used in conjunction with the `cms`
module. The main class for displaying the interface is a specialized [Controller](api:SilverStripe\Control\Controller) called [LeftAndMain](api:SilverStripe\Admin\LeftAndMain), named
as it is designed around a left hand navigation and a main edit form.

Starting with SilverStripe 4, the user interface logic is transitioned from
jQuery and [jQuery.entwine](https://github.com/hafriedlander/jquery.entwine),
which is replaced with [ReactJS](http://reactjs.com/). The transition is
done iteratively, starting with `AssetAdmin` and `CampaignAdmin`.

[CHILDREN]

## How to's

[CHILDREN Folder="How_Tos"]