SEO pages, destination search, package quotes & lead webhook — Level 1 Data Flow Diagram (DFD) showing external entities, processes, data stores, and labeled data flows.
Next.jsPostgreSQLRedisTanStack
External entityUsers or systems outside the application boundary (customers, admins, devices).
ProcessBusiness logic handled by Next.js API routes / server actions.
Data storePostgreSQL for durable records; Redis for cache, sessions, and live data.