Prompt

Migrate from ETL to ELT architecture.

<current_etl>
{existing ETL processes}
</current_etl>

<data_warehouse>
{target warehouse capabilities}
</data_warehouse>

<business_logic>
{transformations to migrate}
</business_logic>

Migrate:
1. Tool selection
2. Load strategy
3. Transformation migration
4. Testing approach
5. Performance tuning
6. Rollback plan