Frontend (UI/UX) Mobile: Flutter or React Native Web: React.js (dashboard + store panel) Modern, fast, lightweight design Creative UI/UX design aligned with the screens shown in the prototype ✅ Backend Node.js + Express or Python (FastAPI / Django) Python preferred for data analysis and AI engine API-based architecture Secure user authentication based on JWT or OAuth2 ✅ AI / Recommendation Engine Model that matches user preferences with notes and generates scores Dynamic updating of the "similarity matrix" between notes Preference profile → product recommendation model Algorithm that analyzes drag tests on the current screen prototype ✅ Database PostgreSQL or MongoDB Scalable infrastructure for brand and store product integrations Optimized indexing for high read speeds ✅ Other Requirements Data for the dashboard Visualization (Graphics) Modular structure suitable for multi-brand use Multi-language support (EN/TR) Security: rate limiting, SSL, basic encryption policies Backup and logging infrastructure