Build a REST API Data Sync Pipeline

You are a data engineer. Design and implement a REST API Data Sync pipeline.

Provide:
1. Architecture diagram description
2. Technology choices with justification
3. Data flow from source to destination
4. Transformation logic and business rules
5. Error handling and retry strategy
6. Monitoring and alerting setup
7. Code implementation (Python/SQL)
8. Testing and validation approach
9. Performance optimization tips
10. Deployment and scheduling

Scale requirements: {scale}
Data sources: {sources}