Direct Connect Architecture: Supplier to OTA and Metasearch

Direct Connect is not a company category; it is an integration topology in which two systems connect without requiring an intermediary distribution hub. Hotel/CRS → OTA, hotel/CRS → metasearch and airline → seller are common examples.

Core flow

Source System
  → Canonical Adapter
  → Partner API
  ← Ack / Reservation / Order
  → Reconciliation

Ownership

Define the source of truth per field. Property/room identity, ARI, restrictions, booking and payment state do not have to be owned by the same system.

Mapping and state

Map partner IDs into canonical identities and retain delta semantics, idempotency keys, source timestamps and versions. HTTP 200 alone does not prove downstream business state is correct.

Retry and reconciliation

A create/update timeout can leave state unknown. Blind retries can create duplicate bookings or duplicate inventory mutations, so a lookup/reconciliation path is required.

When to use it

Direct connections can reduce hops and increase control, but they also move certification, partner-specific maintenance and 24/7 operational responsibility directly onto your team.

Failure modes

• duplicate booking retry after provider timeout,
• losing provider-specific identity/state during canonicalization,
• local booking state diverging from provider state,
• mapping drift causing incorrect property/rate matches,
• applying webhook/polling evidence out of order.

Observability

Track provider success/error rate, p95/p99 latency, UNKNOWN bookings, reconciliation age, mapping failures and duplicate-prevention hits.

Production checklist

• provider adapter boundary,
• canonical request/response model,
• explicit timeout budget,
• idempotency,
• UNKNOWN + reconciliation path,
• preserve provider/source references,
• mapping/version strategy,
• provider-level metrics and traces.