# How to Build and Deploy a Custom Frontend

## What is a Frontend?

Frontends are lightweight applications hosted on Integration Gateway. They can be used to support a wide range of use cases, including creating dashboards, giving easy access to run integrations, or simply as a fast way to host an internal application.

## Accessing a Frontend

Frontends can be given custom subaddresses on your Integration Gateway domain (e.g. `glyueprod.examplebank.sandboxbanking.com/frontends/example_dashboard`) making them easy to bookmark, link, and distribute.

All Frontends have built-in Integration Gateway authentication; users must first log in with their Integration Gateway account before they can load a Frontend. 

## Creating a Frontend

Frontends can be created by uploading a `.zip` bundle that contains the `.html`, `.js`, and `.css` files for your web application, along with any other assets that may be required. 

Frontends require a file named `index.html` to be present, which will be used as the entrypoint into the application. Relative references to pages within the frontend (e.g. `/resources/logo.png`) will work as expected.

<figure><img src="https://688288018-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F1flQ2To8tQpCQWl2Ty9U%2Fuploads%2FoGPBSWHQ9IDhj8xajpgV%2FScreenshot%202024-07-15%20at%204.51.27%E2%80%AFPM.png?alt=media&#x26;token=8a874abd-db83-427e-ab53-69ad5fd479b8" alt=""><figcaption><p>Create a Frontend by giving it a name, path, and uploading the .zip</p></figcaption></figure>

For details on more advanced Frontend features and sample code snippest, see the [reference documentation](https://glyue.docs.sandboxbanking.com/integration-gateway-platform-reference/frontends).

## Editing a Frontend

Once created, a Frontend can be modified by replacing the contents of the uploaded `.zip` with an updated version. Upon save, the new version will be deployed.

The source code of the currently-served Frontend can be downloaded from within the *Edit* page of the Frontend.


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