Yangju's Digital Twin

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Yangju

Yangju

Digital Twin Assistant

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Under the Hood

How this Digital Twin is built and deployed with professional cloud infrastructure

How It Works

This Digital Twin delivers rich personalization through a cloud-native architecture. User questions are securely processed via a serverless API, enriched with contextual memory, and answered by OpenAI GPT-4o for accurate, relevant responses.

Technology Stack

  • • OpenAI GPT-4o for intelligent responses
  • • AWS Lambda for serverless backend logic
  • • API Gateway for secure HTTPS APIs
  • • S3 & CloudFront for global frontend delivery
  • • Next.js for a fast, modern UI

System Architecture

  1. User interacts in the browser
  2. CloudFront delivers the frontend over HTTPS
  3. S3 hosts the static Next.js application
  4. API Gateway routes backend requests
  5. Lambda calls OpenAI GPT-4o
  6. Session memory is stored in S3

Personalization & Memory

Conversations can persist across sessions using an S3-backed memory layer. This enables contextual follow-ups, consistent behavior, and personalized responses over time.

Deployment & Infrastructure

The Digital Twin is deployed entirely on AWS using a serverless model. This ensures automatic scaling, high availability, and low operational overhead while remaining production-ready.

Performance & Availability

  • • Global CDN delivery via CloudFront
  • • Low-latency responses with Lambda
  • • Fast first-token generation from GPT-4o
  • • Highly scalable, cost-efficient architecture
  • • Live 24/7 on the public internet