> For the complete documentation index, see [llms.txt](https://docs.relevant-digital.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.relevant-digital.com/technical/delivery-and-compliance/configure-cdn-delivery.md).

# Configure CDN delivery

Use the CDN to deliver your Prebid.js build and selected custom files. Open **Admin → CDN** to manage the available files.

The CDN is already configured for your Prebid.js builds. Change CDN settings only when you have specific delivery requirements.

### Upload custom files

Upload and maintain files such as `ads.txt` and `sellers.json` directly in the CDN. This gives you a controlled way to publish updates without a separate deployment.

### Publish `ads.txt`

1. Select **Upload File**.
2. Choose **ads.txt (Authorized Digital Sellers)** as the file type.
3. Add or update the file content, then save.

The CDN displays the public URL after you save the file.

{% hint style="warning" %}
Your domain must serve `ads.txt` at its root path. Ask your domain administrator to proxy or redirect the CDN URL to `https://yourdomain.com/ads.txt`.
{% endhint %}

### Publish `sellers.json`

Upload `sellers.json` through the same interface. Configure your domain to expose the CDN file at the required public path.


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