Distributed GraphQL Subscriptions with NATS and Event Driven Architecture is a powerful approach to implementing real-time updates in a distributed system. By combining the power of NATS messaging system with the flexibility of GraphQL, developers can create robust and scalable solutions for real-time data synchronization. The key benefits include reducing memory overhead, simplifying operational complexity, and enabling stateless Subgraphs. Event Driven Federated Subscriptions (EDFS) is a new approach that leverages Event-Driven Architecture to achieve real-time updates without tightly coupling the read and write operations. NATS JetStream can be used to add more advanced features such as time traveling, replaying events, deduplication, and more. By using EDFS and NATS JetStream, developers can build scalable, efficient, and resilient systems that provide real-time updates to clients without sacrificing developer experience on the client-side. Best practices for designing EDFS include emitting only keys of changed entities, using a consistent naming convention, and defining Entities with their keys in the EDFS Graph. As the field continues to evolve, we can expect to see more innovations such as advanced event handling, improved scalability, and enhanced security features.