# Create a sign-in page for multiple tenants with Identity Platform
This page shows you how to build a sign-in page for multiple tenants in
Identity Platform by using
[FirebaseUI](https://github.com/firebase/firebaseui-web), which is a
collection of open-source, prebuilt UI components, and the
[Client SDK](https://github.com/firebase/firebase-js-sdk).
## Before you begin
1. [Enable multi-tenancy and create at least two tenants](https://docs.cloud.google.com/identity-platform/docs/multi-tenancy-quickstart.md.txt).
2. [Configure identity providers for each tenant](https://docs.cloud.google.com/identity-platform/docs/quickstart-cicp#add-provider).
## Get the components
You can fetch the UI script, Client SDK, and CSS files directly
from the CDN by adding them to the `` element of your page:
```html
```
Alternatively, you can install the modules using `npm`, and then reference them
as ES6 imports:
npm install firebase --save && \
npm install firebaseui --save
// Import Firebase JS SDK.
import * as firebase from "firebase/app";
import "firebase/auth";
import * as firebaseui from 'firebaseui'
## Build a UI for selecting tenants
FirebaseUI only handles sign-in flows; you need to build your own UI
for users to select a tenant to sign in with.
To build a basic tenant selection page with two buttons, do the following:
1. Create two tenant selection elements.
2. Create a container element for FirebaseUI.
```html
```
3. Create a configuration for each tenant.
4. To render the sign-in component
with FirebaseUI, add tenant selection click handlers.
Before rendering the UI component,
set the tenant ID on the `Auth` instance.
5. Launch your app. A sign-in screen with two tenant buttons appears.
You can also build multi-page workflows.
For example, you can create a workflow where the first page asks users for
their email, and the next page lets them select a tenant.
Additionally, you can host separate login pages for each tenant. To do this,
you must parse the tenant ID from the URL and then set it on the `Auth` object.
## What's next
- [See the FirebaseUI source code on GitHub](https://github.com/firebase/firebaseui-web).
- [See the sample code on GitHub](https://github.com/firebase/quickstart-js/blob/master/auth/multi-tenant-ui.html).