Prompt

Design enterprise event streaming platform.

<event_sources>
{systems producing events}
</event_sources>

<event_consumers>
{systems consuming events}
</event_consumers>

<scale_requirements>
{events per second, retention}
</scale_requirements>

Design:
1. Platform selection
2. Topic design
3. Schema registry
4. Stream processing
5. Event routing
6. Monitoring strategy