> For the complete documentation index, see [llms.txt](https://mercure-technologies.gitbook.io/xprem/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://mercure-technologies.gitbook.io/xprem/3-0-x/welcome.md).

# Welcome

> Looking for v2 documentation ? [Link](https://mercuretechnologies.github.io/expo-open-ota/)

## Expo Open Ota

<h4 align="center">Self-hosted over-the-air updates for Expo apps, built for production at scale.</h4>

{% hint style="warning" %}
**Expo Open OTA is an independent open-source project.** It is not affiliated with, endorsed by, or supported by Expo (650 Industries, Inc.). The name is used only to describe compatibility with the Expo Updates protocol.
{% endhint %}

<a href="/pages/npXR6ENT6Nu3gKPGlGlL" class="button primary" data-icon="rocket">Getting started</a>

***

#### Why Self-Host Your OTA Update server? <a href="#why-self-host-your-ota-update-server" id="why-self-host-your-ota-update-server"></a>

There are several reasons why you might want to self-host your updates instead of relying on the official Expo service:

**1. Cost Considerations**

Expo charges OTA usage by Monthly Active User (MAU). The **Free** plan supports up to **1,000 MAUs**.

The following monthly estimates use the **Starter** plan up to 20,000 MAUs. It costs **$19/month** and includes **3,000 MAUs**. From 50,000 MAUs, they use the **Production** plan. It costs **$199/month** and includes **50,000 MAUs**. Usage charges are progressive.

* **5,000 MAUs**: $19 plan + approximately $10 usage = **approximately $29/month**
* **20,000 MAUs**: $19 plan + approximately $85 usage = **approximately $104/month**
* **50,000 MAUs**: $199 Production plan + $0 usage = **$199/month**
* **100,000 MAUs**: $199 Production plan + approximately $250 usage = **approximately $449/month**
* **1,000,000 MAUs**: $199 Production plan + approximately $3,575 usage = **approximately $3,774/month**

[View Expo's current pricing](https://expo.dev/pricing).

Self-hosting removes the dependency on Expo's pricing structure, giving you full control over your costs.

**2. Data Governance and Performance**

**3. Full Control Over Your Infrastructure**

**4. Custom Network and Security Constraints**

**5. Open-Source and Third-Party Independence**

***

By self-hosting **Expo Open OTA**, you gain the flexibility, security, and control needed for large-scale or restricted-network deployments, while still benefiting from Expo's powerful development tools.

***

#### Production-grade delivery

{% columns %}
{% column %}
**⚙️ Ready for production**

Built for reliable operation at scale. Security and quality guide every deployment.
{% endcolumn %}

{% column %}
**🚀 Publish from your CI**

The `eoas` CLI configures projects and publishes updates in one workflow.
{% endcolumn %}

{% column %}
**⚡ Fast asset delivery**

Serve assets at the edge with CloudFront or GCS signed URLs. Public buckets stay optional.
{% endcolumn %}
{% endcolumns %}

***

#### Deployment options

<table data-view="cards"><thead><tr><th>Option</th><th>Description</th><th data-hidden data-card-cover data-type="image">Cover image</th><th data-hidden data-card-target data-type="content-ref"></th></tr></thead><tbody><tr><td><strong>Docker-ready</strong></td><td>Run Expo Open Ota in any Docker-compatible environment.</td><td data-object-fit="contain"><a href="https://3865040152-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FAPMujKABP50H0CfF1Mrs%2Fuploads%2FA8PaDbXK8kCHtlBULK5q%2Fdocker.png?alt=media&#x26;token=a534bd6f-7f5d-4c1f-83fa-a283f9309dc0">https://3865040152-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FAPMujKABP50H0CfF1Mrs%2Fuploads%2FA8PaDbXK8kCHtlBULK5q%2Fdocker.png?alt=media&#x26;token=a534bd6f-7f5d-4c1f-83fa-a283f9309dc0</a></td><td></td></tr><tr><td><strong>Helm charts</strong></td><td>Deploy and configure Expo Open Ota on Kubernetes with Helm.</td><td data-object-fit="contain"><a href="https://3865040152-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FAPMujKABP50H0CfF1Mrs%2Fuploads%2FxTZ53jh7iG1IDvBEErEH%2Fkubernetes.svg?alt=media&#x26;token=5c1b2b4d-3fbf-48a2-9252-488d828ef649">https://3865040152-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FAPMujKABP50H0CfF1Mrs%2Fuploads%2FxTZ53jh7iG1IDvBEErEH%2Fkubernetes.svg?alt=media&#x26;token=5c1b2b4d-3fbf-48a2-9252-488d828ef649</a></td><td></td></tr><tr><td><strong>Railway template</strong></td><td>Launch a managed deployment from a Railway template.</td><td data-object-fit="contain"><a href="https://3865040152-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FAPMujKABP50H0CfF1Mrs%2Fuploads%2FG4gQKYlYVcFLJnENS5Rb%2Frailway.png?alt=media&#x26;token=1ff79ee5-66f0-4a82-ad4f-f170084f2500">https://3865040152-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FAPMujKABP50H0CfF1Mrs%2Fuploads%2FG4gQKYlYVcFLJnENS5Rb%2Frailway.png?alt=media&#x26;token=1ff79ee5-66f0-4a82-ad4f-f170084f2500</a></td><td></td></tr></tbody></table>

***

#### Supported providers

<table data-view="cards"><thead><tr><th>Provider</th><th>Description</th><th data-hidden data-card-cover data-type="image">Cover image</th><th data-hidden data-card-target data-type="content-ref"></th></tr></thead><tbody><tr><td><strong>Amazon AWS</strong></td><td><p><strong>Updates</strong><br>S3 bucket</p><p><strong>Asset delivery</strong><br>CloudFront CDN</p><p><strong>Secrets</strong><br>AWS Secrets Manager</p></td><td data-object-fit="contain"><a href="https://3865040152-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FAPMujKABP50H0CfF1Mrs%2Fuploads%2FKHFjCHB63lEhLlvGe3I1%2Faws.webp?alt=media&#x26;token=643c5fe8-93d0-4d8b-b4f7-b1b114772abf">https://3865040152-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FAPMujKABP50H0CfF1Mrs%2Fuploads%2FKHFjCHB63lEhLlvGe3I1%2Faws.webp?alt=media&#x26;token=643c5fe8-93d0-4d8b-b4f7-b1b114772abf</a></td><td></td></tr><tr><td><strong>Google Cloud</strong></td><td><p><strong>Updates</strong><br>Cloud Storage</p><p><strong>Asset delivery</strong><br>GCS signed URLs</p></td><td data-object-fit="contain"><a href="https://3865040152-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FAPMujKABP50H0CfF1Mrs%2Fuploads%2FL8oT1veGWLI0KccoZE33%2Fgcp.png?alt=media&#x26;token=25db04bb-5f52-4f4b-9856-e1aaf87517e9">https://3865040152-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FAPMujKABP50H0CfF1Mrs%2Fuploads%2FL8oT1veGWLI0KccoZE33%2Fgcp.png?alt=media&#x26;token=25db04bb-5f52-4f4b-9856-e1aaf87517e9</a></td><td></td></tr><tr><td><strong>Cloudflare</strong></td><td><strong>Updates and assets</strong><br>R2 storage</td><td data-object-fit="contain"><a href="https://3865040152-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FAPMujKABP50H0CfF1Mrs%2Fuploads%2F1grcXsAeGoAwjvsi3AMO%2Fcloudflare.webp?alt=media&#x26;token=fab98d12-e27c-489f-863d-fbdd5ec71042">https://3865040152-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FAPMujKABP50H0CfF1Mrs%2Fuploads%2F1grcXsAeGoAwjvsi3AMO%2Fcloudflare.webp?alt=media&#x26;token=fab98d12-e27c-489f-863d-fbdd5ec71042</a></td><td></td></tr><tr><td><strong>Microsoft Azure</strong></td><td><p><strong>Updates</strong><br>Azure Blob Storage</p><p><strong>Asset delivery</strong><br>Short-lived SAS URLs<br>Front Door support with <a data-mention href="/pages/n9xmpNPWPqtNSVHHApC2">/pages/n9xmpNPWPqtNSVHHApC2</a></p></td><td data-object-fit="contain"><a href="/files/jQO2XfzNZEzRF8pMzLvu">/files/jQO2XfzNZEzRF8pMzLvu</a></td><td></td></tr></tbody></table>

{% hint style="info" %}
**Need another storage provider?** Any S3-compatible provider works. You can also store updates on a local volume.
{% endhint %}


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