The Shopify admin is where users configure their stores and manage their businesses. Integrating your app with the admin gives users functionality that feels familiar and can be easily found.
This guide explains the different ways that you can use Shopify Extensions to integrate your app with the Shopify admin.
## App home
The primary place where users engage with your app is its app home. This is the location where merchants are directed when they navigate to your app in Shopify.
The Shopify admin provides a surface for apps to render the UX for their app home. On the web, the surface is an iframe and in the Shopify mobile app, the surface is a WebView.

By combining [Shopify App Bridge](/docs/api/app-bridge) and [Polaris React](https://polaris-react.shopify.com), you can make your app display seamlessly in the Shopify admin. Polaris React enables apps to match the visual appearance of the admin by using the same design components. App Bridge enables apps to communicate with the Shopify admin and create UI elements outside of the app's surface. Such elements include navigation menus, modals that cover the entire screen, and contextual save bars that prevent users from navigating away from the page when they have unsaved changes.
When you're building your app home, follow the [App Design Guidelines](/docs/apps/design-guidelines) and the [admin performance best practices](/docs/apps/build/performance/admin-installation-oauth) to ensure that you create a great experience for users.
## UI extensions in admin
To display a user interface in Shopify admin, apps can include UI extensions. Shopify admin can display three types of UI extensions: admin actions, action print actions, and admin blocks.
### Admin actions
[Admin actions](/docs/apps/build/admin/actions-blocks#admin-action-ui-extensions) are powered by UI extensions and enable your app to embed transactional workflows that display as modals. These UI extensions let users interact with your app directly from key pages of the Shopify admin, such as the **Products**, **Customers**, and **Orders** pages. You can also create UI extensions that become available when users select multiple resources in an index table, for example, selecting multiple products on the **Products** index page.