Navan Reference Architecture Overview Production-grade architecture for Navan API integrations. Navan provides raw REST endpoints with OAuth 2.0 — no SDK, no webhooks, no sandbox. This architecture handles those constraints with five purpose-built layers. Prerequisites - Navan API credentials from Admin Travel admin Settings Integrations - Cloud infrastructure (AWS, GCP, or Azure) for hosting integration services - Data warehouse for BOOKING and TRANSACTION tables - Understanding of OAuth 2.0 client credentials flow Instructions Architecture Overview Layer 1 — API Gateway The gateway provides…