Engineering
Supplier integrations: GDS, channel managers and direct contracts
June 2026 · 9 min read
What each integration type gives you, what it costs to maintain, and how to sequence them.
Three sources, three trade-offs
GDS gives breadth for air and rail with strict certification and per-transaction economics.
Channel managers and bed banks give fast hotel coverage with thinner margins and less control of content.
Direct contracts give the best margin and the richest content, at the cost of manual contract and allotment management.
Build an aggregation layer, not point-to-point links
Normalise every supplier into one internal product and availability model. Without it, each new supplier multiplies your surface area and every pricing bug becomes six bugs.
Cache aggressively, reconcile continuously, and log every upstream response — supplier disputes are won with evidence.
Sequencing
Start with the supplier that covers the most revenue, add a second of a different type to force the abstraction to be honest, then scale.
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