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Oct 22, 2025
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Update dynamic backends documentation #1211

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Update dynamic backends documentation
kailan Oct 21, 2025
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Merge branch 'main' into kailan-dyn-backend-limits
TartanLlama Oct 22, 2025
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4 changes: 2 additions & 2 deletions documentation/docs/globals/fetch.mdx
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Expand Up @@ -37,9 +37,9 @@ Backends are configured using the Fastly service backend configuration, see the

## Dynamic Backends

Dynamic backends are a compute feature that allow services to define backends for themselves. This is a service-level Fastly feature that must be enabled through [Fastly Support](https://support.fastly.com/hc/en-us/requests/new?ticket_form_id=360000269711).
Dynamic backends are a compute feature that allow services to define backends for themselves.

When dynamic backends are enabled at the service level, the explicit `backend` option is no longer required for `fetch()` requests, and will instead be automatically created.
If the `backend` option is not provided when making `fetch()` requests, a backend will be automatically created by extracting the protocol, host, and port from the provided URL.

In addition, custom backend configuration options can then also be provided through the [`Backend()`](../fastly:backend/Backend/Backend.mdx) constructor.

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