## 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](https://cosmo-docs.wundergraph.com/router/cosmo-streams). If a subgraph uses or defines any event driven directives, it will be interpreted to be an Event-Driven Graph.