We are taking over a project that is not completed. We need to rebuild the workflow and ship the product in 2 weeks. Here is the current stack: Infrastructure (AWS) EC2 (Staging environment) ECS Fargate (Production environment) Application Load Balancer (ALB) ECR (Container registry) S3 (File & audio storage) VPC, Private Subnets, IAM Roles, Security Groups CloudWatch (Logging & Monitoring) AI & Audio Services OpenAI (LLM & AI processing) AssemblyAI ElevenLabs Pinecone (Vector database for semantic search / RAG) Whisper Database MongoDB Payments Stripe Authentication Google OAuth JWT-based authentication Application Architecture Frontend (Next.js) Admin Panel (Next.js) Node.js Backend (Express) Python AI Service (FastAPI)