# What is Studio?

Studio is the part of JustPush that lets you **convert any webhook into a push notification** — with your own logic in between.

Most services can send a **webhook**: an HTTP request fired when something happens (a payment, a deploy, an error, a new sign-up). Studio gives you an endpoint to receive those requests, runs a small piece of **JavaScript** you write to turn the raw payload into a clean message, and delivers it through JustPush to your phone.

## Key concepts

| Concept          | What it is                                                             |
| ---------------- | ---------------------------------------------------------------------- |
| **Integration**  | A named webhook endpoint with its own URL, token, code, and history.   |
| **Endpoint URL** | The unique address external services send requests to.                 |
| **Token**        | A secret that authorizes requests to your endpoint.                    |
| **Code**         | The JavaScript that transforms an incoming request into a message.     |
| **Revision**     | A saved, numbered version of your code. You can roll back at any time. |
| **Request**      | A single incoming webhook call, recorded with its payload and result.  |
| **Message**      | The push notification Studio produces and JustPush delivers.           |

## What you can build

* A **deploy alert** that pings you when CI finishes — green for success, red for failure.
* A **payment notification** that shows the customer and amount, with a button to the receipt.
* A **monitoring alarm** that fires a high-priority, sound-enabled alert when a service goes down.
* A **digest** that reformats a noisy third-party webhook into one readable line.

## Where Studio fits in JustPush

JustPush is the notification platform — a mobile app (iOS and Android) plus an API for sending messages. Studio is the **no-server way to feed that platform from webhooks**: instead of writing and hosting code that calls the JustPush API, you write just the transformation logic and Studio handles receiving, running, and delivering.

> **Next:** [Sign in to Studio](/introduction/justpush-studio/getting-started/signing-in.md) to get started.


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