after 4 months

Frontend (Document Upload + Chat Interface)

• Service: Azure App Service (Web App)

• Features:

  • Scalable web hosting for UI and APIs
  • Use Standard or Basic Tier for cost savings

• Cost Optimization:

  • Auto-scale during business hours only
  • Use CDN (Azure Front Door or Azure CDN) for static assets

API Layer (Document Processing & Orchestration)

• Service: Azure Functions (Serverless)

• Use for:

  • Upload handling
  • API endpoints
  • Triggering workflows

• Cost Optimization:

  • Pay-per-execution
  • Best for variable workloads (spiky traffic)

NLP Processing Engine

• Service: Azure Machine Learning or Azure Container Instances
• Model Hosting Options:
  • Use Azure Kubernetes Service (AKS) with spot instances for LayoutLM
  • Use Azure OpenAI Service for GPT-based processing if available

Vector Search (RAG System)

• Service: Azure Cognitive Search + Azure Cosmos DB
• Details:
  • Use Cosmos DB for metadata + hierarchical JSON storage
  • Use Azure Search with vector index for semantic search

Storage Systems

• Service: Azure Blob Storage

• Usage:

  • Raw documents
  • Processed JSON
  • Generated videos, audio, and images

• Cost Optimization:

  • Use Hot tier for recent uploads, Cool/Archive for older assets
  • Use lifecycle rules to auto-move blobs to cheaper tiers