The technical architecture for The Vault Los Angeles relies on a robust and scalable stack designed for luxury performance. The frontend, covering both the mobile applications (iOS and Android) and the responsive web platforms, will be developed using FlutterFlow. For the backend and database, the system utilizes Supabase (PostgreSQL), which also manages user authentication via Supabase Auth (supporting both email and social logins) as well as file storage for item photos and condition scans through Supabase Storage. Financial transactions, including split payments and security deposits, are processed securely through Stripe Connect. To power the automated ingestion and image analysis, the platform integrates the Google Cloud Vision API for AI tagging. User engagement is maintained through OneSignal or Firebase Cloud Messaging for push notifications, while fulfillment logistics are supported by USPS API or EasyPost for generating shipping labels. Finally, the entire ecosystem is hosted across a combination of Supabase, Vercel, Cloudflare, and Firebase to ensure high availability and speed.