Building event-driven architectures (EDAs) can be challenging, especially when integrating complex cloud components with local development services. A unique development workflow showcased by a demo application illustrates how to balance local service integration with cloud stream processing using MongoDB Atlas Stream Processing and ngrok. This approach allows developers to work directly from their local environment, providing convenience and efficiency by securely interacting with cloud services. MongoDB Atlas Stream Processing simplifies the development of EDAs by allowing processing logic to be defined directly within MongoDB Atlas, using familiar syntax and managed infrastructure. The demo application simulates a real-time order fulfillment process, demonstrating the orchestration of event-driven architecture through MongoDB Atlas Stream Processing. It features services like shopping cart and order processing, with events ingested from MongoDB or Apache Kafka and enriched by processors that trigger actions in different services. This setup illustrates the ease of building and testing sophisticated, event-driven applications locally, highlighting MongoDB Atlas Stream Processing's capability to lower the barriers to entry for real-time EDAs by integrating seamlessly with local development environments.