> ## Documentation Index
> Fetch the complete documentation index at: https://docs.a0.dev/llms.txt
> Use this file to discover all available pages before exploring further.

# Update Overview

> Deploy updates to all platforms instantly without rebuilding your app

# How It Works

a0's Over the Air Updates system allows you to deploy your latest code to all platforms simultaneously. This revolutionary approach means you can:

* Fix bugs instantly without App Store review times
* Add features without forcing users to update
* Test changes in production quickly
* Maintain one codebase for all platforms

<Info>
  This technology works similarly to React Native's CodePush or Expo Updates, but it's built directly into a0 and works across all platforms — not just mobile.
</Info>

## Next Steps

<CardGroup cols={2}>
  <Card title="Deploy Your First Update" icon="rocket" href="/publishing/ota-updates/deploy-updates">
    Learn how to push your first Over the Air Update to all platforms.
  </Card>

  <Card title="Testing Your App" icon="flask-vial" href="/development/testing/overview">
    Test your updates before deploying to production.
  </Card>
</CardGroup>