Enterprise Tableau to Power BI migration platform on AWS orchestrates five automated phases—discovery, semantic modeling, visual creation, deployment, and QC—across a multi-tier VPC with dedicated EC2 hosts, RDS inventories, and S3 artifact stores. A Streamlit UI tier fronted by ALB and AWS WAF guides migration teams through workbook selection and progress tracking, while Step Functions and EventBridge coordinate job execution across discovery, semantic, visual, and deployment engines. Each engine specializes in metadata extraction, DAX model generation, dashboard layout conversion, and Power BI publishing, with comprehensive testing and diff comparison ensuring quality parity. Fork this diagram to customize EC2 instance types, add multi-region failover, or integrate with your existing CI/CD pipeline on Diagrams.so. The architecture demonstrates how to automate large-scale BI platform migrations while maintaining audit trails via CloudTrail and encryption via KMS.