Secure Model Service Architecture

System Overview

┌────────────────────────────────────────────────────────────────────┐
│                         Client Applications                         │
└───────────────────────────────┬────────────────────────────────────┘
                                │
                                ▼
┌────────────────────────────────────────────────────────────────────┐
│                            API Gateway                              │
└───────────────────────────────┬────────────────────────────────────┘
                                │
                                ▼
┌────────────────────────────────────────────────────────────────────┐
│                      Authentication Service                         │
└───────────────────────────────┬────────────────────────────────────┘
                                │
                                ▼
┌────────────────────────────────────────────────────────────────────┐
│                          Core Orchestrator                          │
└──┬─────────────────┬──────────────────┬──────────────────┬─────────┘
   │                 │                  │                  │
   ▼                 ▼                  ▼                  ▼
┌─────────┐    ┌──────────┐    ┌────────────────┐    ┌────────────┐
│ Model   │    │ Encrypt. │    │ Kubernetes     │    │ Endpoint   │
│ Service │    │ Service  │    │ Orchestration  │    │ Management │
└────┬────┘    └────┬─────┘    └───────┬────────┘    └─────┬──────┘
     │              │                  │                   │
     ▼              ▼                  ▼                   ▼
┌─────────┐    ┌──────────┐    ┌────────────────┐    ┌────────────┐
│AWS S3   │    │Encryption│    │Docker Container│    │AWS Lambda  │
│Buckets  │    │Libraries │    │& K8s Cluster   │    │Functions   │
└─────────┘    └──────────┘    └────────────────┘    └────────────┘

Component Definitions

1. API Gateway

• Handles client requests for model creation, inference, and fine-tuning
• Routes requests to appropriate microservices
• Implements rate limiting and request validation

2. Authentication Service

• Verifies client credentials and permissions
• Issues and validates authentication tokens
• Manages access control to client-specific endpoints

3. Core Orchestrator

• Central coordination service
• Manages workflow between components
• Tracks model deployment status
• Handles error states and recovery

4. Model Service

• Fetches base models from source repositories
• Creates client-specific model copies
• Manages model versioning and metadata
• Integrates with S3 for model storage

5. Encryption Service

• Implements hybrid AES/Kyber encryption for model weights
• Manages encryption key generation and storage
• Provides secure key exchange mechanisms
• Ensures HIPAA/SOC2 compliant encryption standards

6. Kubernetes Orchestration

• Provisions and configures Kubernetes clusters
• Manages Docker container deployment
• Implements auto-scaling based on workload
• Handles resource allocation (CPU/GPU)

7. Endpoint Management

• Creates client-specific inference endpoints
• Configures AWS Lambda functions for API handling
• Monitors endpoint health and performance
• Implements endpoint lifecycle management

Data Flow

1. Client requests model deployment via API
2. System authenticates request and validates client permissions
3. Orchestrator initiates deployment workflow:
   • Model Service retrieves base model from repository
   • Encryption Service creates encrypted client-specific copy
   • Model is stored in client-specific S3 bucket
   • Kubernetes provisions compute resources
   • Lambda function creates secure endpoint
4. Client receives endpoint credentials
5. Client can perform inference or fine-tuning via endpoint