How McDonald Sells Millions of Burgers Per Day With Event-Driven Architecture

McDonald's has developed a unified, event-driven platform to handle its global operations efficiently. The platform supports scalability, high availability, performance, security, reliability, consistency, and simplicity. Core components include AWS Managed Streaming for Kafka (MSK), a schema registry, a standby event store, custom SDKs, and an event gateway. The system ensures data integrity and efficient processing through schema validation and robust error-handling mechanisms. Key techniques include data governance, cluster autoscaling, and domain-based sharding. Future enhancements include formal event specification, transition to serverless MSK, and improved developer tooling.