To build GenAI apps faster, consider using event streaming microservices patterns, where events with schemas are published by services and subscribed to by other services, allowing for loose coupling and easy extension. Schemas serve as contracts between services, defining the structure of data exchanged between them, ensuring compatibility and preventing breaking changes. A schema registry, such as Confluent Schema Registry, is used to manage and validate schemas, providing a framework for developers to specify, document, evolve, and validate schemas, and enabling automated schema validation and testing. This approach enables fast development, reduces coupling between services and teams, and ensures data quality by preventing incompatible events from being produced or consumed in production.