> For the complete documentation index, see [llms.txt](https://clients.medianova.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://clients.medianova.com/products/performance-cdn/dynamic-content-acceleration/advanced-configuration/headers/cors-header.md).

# CORS Header

The **CORS Header** feature for Dynamic Content Acceleration operates the same way as in Static Content Delivery.\
It allows CDN edge servers to set or override the `access-control-allow-origin` header for HTML responses when you want to explicitly control which origins may access your resources. By default, the CDN forwards CORS headers returned by your origin; enabling this feature instructs the CDN to generate or override the header instead, using either a wildcard or a defined allow list.

For configuration details, allowed domain behavior, and examples, refer to the main documentation:\
**Learn more in the** [**CORS Header documentation**](/products/performance-cdn/static-content-delivery/advanced-configuration/headers/cors-header.md)**.**


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