A comprehensive checklist for planning and implementing modern application architecture.

Architecture Foundation

• [ ] Decide architecture: Monolithic / Microservices / Serverless
• [ ] Define product stage: MVP, scaling, or enterprise

Frontend & Backend

• [ ] Select frontend stack (Flutter / Next.js / Electron)
• [ ] Choose backend (Node.js / FastAPI / Django)

Data Layer

• [ ] Plan database structure (PostgreSQL / MongoDB / Firebase)
• [ ] Define AI layer: OpenAI API, LangChain, Vertex AI
• [ ] Design data pipelines for ML training and inference

Infrastructure & Deployment

• [ ] Set up cloud hosting (Google Cloud Run / AWS / Firebase)
• [ ] Add real-time sync if needed (WebSockets / Firebase)
• [ ] Set up CI/CD pipeline for deployments
• [ ] Plan cost monitoring and autoscaling

Security & Authentication

• [ ] Integrate authentication securely (OAuth2 / Firebase Auth)
• [ ] Define security: encryption at rest/in transit, secrets manager

Monitoring & Testing