Event-Driven Architecture Planner

Design an event-driven architecture.

Inputs:
Event types: {EVENTS}
Producers: {PRODUCERS}

Provide:
1. Event schema
2. Broker choice (Kafka, SNS/SQS, NATS)
3. Consumer group strategy
4. Delivery semantics (at-least-once, exactly-once)
5. Dead letter queue handling
6. Replay and recovery strategy