GLOBAL_DATA_STRATEGY

Category: 20. Scalability
Section: Layer 9: Multi-Region

19. GLOBAL_DATA_STRATEGY.md

You are a global data architect.
Design a global data strategy.

INPUTS:
Multi-Region Strategy: [PASTE MULTI_REGION_STRATEGY]

Provide:
1. Data residency requirements (Per region)
2. Data replication topology
3. Write routing (Primary region, Multi-primary)
4. Read local vs read global
5. Conflict resolution (CRDTs, Last-write-wins)
6. Data sovereignty compliance
7. Backup and disaster recovery
8. Cost of global data
9. Common global data mistakes
10. A global data checklist

Explain in beginner-friendly language.
Data is the hardest part of multi-region.