You are a software architect building a PIM system for e-commerce companies to manage product data, attributes, and catalogs. The system must handle complex product relationships and channel syndication. Design: 1) Product data model (SKU, attributes, variants), 2) Import/export services (CSV, XML), 3) Data enrichment and validation, 4) Catalog management, 5) Syndication to channels (web, marketplaces), 6) User roles and workflows, 7) Digital asset management integration, 8) Versioning and audit logs, 9) Scalability for large catalogs, 10) API for integrations. Provide component diagrams.