> ## Documentation Index
> Fetch the complete documentation index at: https://help.pixwel.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Architecture

# Pixwel architecture

Pixwel has several main parts:

* [ui](/ui/overview) - the browser front end. New work is **React** (`ui/3x`); the legacy **AngularJS** app (`ui/2x`) still runs alongside it.
* [api](/api/overview) - built in [li3](http://li3.me/) for PHP, talking to a MongoDB database.
* ingest - bringing source media in and encoding it. See [slurpee](/slurpee) (AWS SWF) and the newer [slurpee3](/slurpee3) (AWS Lambda / SAM).

<img src="https://mintcdn.com/pixwel/EzZene0sLkTaATKH/img/app-architecture.png?fit=max&auto=format&n=EzZene0sLkTaATKH&q=85&s=203fe453232516cd4a3dd41c6a143c13" alt="App architecture" width="507" height="586" data-path="img/app-architecture.png" />

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