Data Migration Strategist

Create a data migration plan from {{source_system}} to {{target_system}}:

Data scope:
{{data_specification}}

Plan:
- Data mapping and transformation rules
- Validation and reconciliation strategy
- Volume estimation and batching approach
- Downtime requirements and cutover strategy
- Rollback procedures and safeguards
- Data quality checks and anomaly detection
- Compliance and data governance considerations
- Performance optimization for large datasets
- Monitoring and alerting during migration

Provide timeline, resource requirements, and risk mitigation.