> ## Documentation Index
> Fetch the complete documentation index at: https://wundergraphinc-brendan-add-sof-link.mintlify.site/llms.txt
> Use this file to discover all available pages before exploring further.

# Event-Driven Federated Subscriptions

Defining an Event-Driven Graph with Event-Driven Federated Subscriptions.

An Event-Driven Graph (EDG) is best thought to be an abstract subgraph that facilitates [Cosmo Streams](/router/cosmo-streams). If a subgraph uses or defines any event driven directives, it will be interpreted to be an Event-Driven Graph.