📄️ Providers Overview
Nexa talks to the outside world through adapters. Every external system — a hotel GDS, a booking engine, an email provider, a PSP, an LLM — is hidden behind a thin, interface-typed adapter. As a customer, the orchestration layer never changes when you switch providers (or run two in parallel) — it's tenant configuration, not a code release.
📄️ Direct Contracts
Direct contracts are pre-negotiated deals with specific hotels — guaranteed inventory and locked rates for a known airport. They participate in the allocation just like any other provider, with a few advantages.
📄️ Payments & PSP
Most Nexa tenants run in corporate-guarantee mode — the airline settles with the hotel at check-out and no card is charged at booking. Some airports (or chains) require a card-backed booking, which is where the PSP adapter comes in.