Email-driven document processing pipeline with multi-stage validation, extraction, and persistence across seven specialized hosts. Data flows from email inbox through structural validation, license and certificate checks, status consultation, and XML extraction into a core database. The architecture demonstrates enterprise-grade document handling with validation gates at ingestion, core processing, and front-end layers, ensuring data integrity and compliance before persistence. Fork this diagram on Diagrams.so to customize validation rules, add error handling branches, or integrate with your document management system. This pattern is ideal for organizations processing high-volume structured documents via email with strict audit and traceability requirements.