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Architecture Overview

Document Status: Placeholder - To be completed in Phase 4

System Overview​

LC DocCheck is a cloud-native document compliance checking system built on Azure services.

High-Level Architecture​

┌─────────────────┐     ┌─────────────────┐     ┌─────────────────┐
│   Power Apps    │────▶│  Azure          │────▶│   Cosmos DB     │
│   Code App      │     │  Functions      │     │   (Serverless)  │
└─────────────────┘     └─────────────────┘     └─────────────────┘
                               │
                               ▼
                        ┌─────────────────┐
                        │  Azure AI       │
                        │  Foundry        │
                        └─────────────────┘

Components​

Frontend (Power Apps Code App)​

  • React 18.2.0 with Fluent UI v9
  • TanStack Query for state management
  • Document upload with SAS URL authentication

Backend (Azure Functions)​

  • Python-based Azure Functions
  • Document extraction and analysis
  • Compliance checking against LC terms

Data Layer (Cosmos DB)​

  • Serverless deployment
  • Nested document structure
  • Sales orders with embedded LC documents, PI documents, shipments

AI Services (Azure AI Foundry)​

  • Document field extraction
  • Compliance rule evaluation
  • Natural language processing for LC terms

Data Flow​

  1. Document Upload: User uploads LC/PI/shipping documents via SAS URL
  2. Extraction: Azure Functions process documents through AI Foundry
  3. Storage: Extracted data stored in Cosmos DB with full audit trail
  4. Comparison: LC terms compared against PI and shipping documents
  5. Results: Compliance results displayed in real-time

Security Model​

  • Entra ID authentication
  • Role-based access control
  • Document access scoped to organisation
  • SAS URL tokens for secure blob access

See Also​