backend
[Backends] API. A backend represents a service that the application can send requests to, potentially caching the responses received. Backends come in one of two flavors: * **Static Backends**: These backends are created using the Fastly UI or API, and are predefined by the user. Static backends typically have short names that are usable across every instance of a service. * **Dynamic Backends**: These backends are created programmatically using the `register-dynamic-backend` API. They are defined at runtime, and may or may not be shared across sandboxes depending on how they are configured. To use a backend, pass it to a `send*` function. Future versions of this function may return an error if your service does not have a backend with this name. [Backends]: https://www.fastly.com/documentation/guides/integrations/non-fastly-services/developer-guide-backends/