The Global Map of Distribution: Sellers, GDS and Brokers
Technical connectors (GDS, brokers) and final sellers: who is who in the rent-a-car distribution network.
Summary
- The ecosystem splits into technical connectors (GDS, brokers) that move data and final sellers that capture the customer.
- The GDS is technological infrastructure: it does not buy or sell inventory; the commercial relationship is agreed between the rent-a-car and the agency.
- Brokers are commercial intermediaries that negotiate rates and resell through their own portals or massive affiliate networks.
- OTAs (booking on their site) and metasearch (comparators, CPC/CPA) are key channels; agencies, TMCs, corporates and airlines complete the map.
- Connectivity table: where the booking happens, revenue model, and how each channel gets the offer.
In the vehicle rental industry, sales is a financial discipline based on asset visibility. A vehicle is a unit of inventory that depreciates every second; therefore, integrating into the global distribution network is not just a marketing option—it is the engine that guarantees capital turnover.
This ecosystem splits into two critical functions: technical connectors (which move the data) and final sellers (which capture the customer). Understanding who is who allows the operator to negotiate better margins and avoid unnecessary duplication.
1. Connection Nodes: GDS and Brokers
Before a car appears on a customer's screen, inventory must travel through technical infrastructure that acts as data bridges.
GDS (Global Distribution Systems): The Technology Highway
It is important to understand that a GDS does not buy or sell inventory, nor does it set commercial agreements for you. It is essentially the technological infrastructure that makes your offer visible worldwide.
Function: It acts as a massive data "translator" and carrier. It makes rent-a-car availability and prices available to travel agencies and TMCs (Travel Management Companies).
The Commercial Agreement: The GDS only provides the infrastructure; the commercial relationship (rates and commissions) is agreed directly between the rent-a-car and the final seller (the agency).
Examples: Amadeus, Sabre, Travelport.
Brokers (Inventory Aggregators)
Unlike the GDS, the Broker is a commercial intermediary. They do intervene in pricing strategy, negotiating specific rates with the rent-a-car to resell through their own portals or massive affiliate networks.
Function: They specialize in moving large volumes of fleet, especially in high tourism rotation markets. They are experts in acquisition marketing and often dominate search engine positioning for the end customer.
Operational Value: They give the local operator access to massive demand that would be impossible to capture individually, in exchange for a commission per confirmed booking.
Examples: Auto Europe, Rentalcars (Booking Group), DoYouSpain, CarTrawler, CRX, Zezgo, Wisecars.
2. Final Sellers (Travel Sellers)
A. OTAs (Online Travel Agencies) vs. Metasearch
It is crucial to distinguish these two players, since their attribution model and where the booking takes place define your pricing strategy.
Online Travel Agencies (OTAs)
They are agencies where the booking happens within their ecosystem. The customer enters their details and completes the transaction on the OTA platform.
Business Model: Based on commission per confirmed booking.
Companies: Booking.com, Expedia, Priceline, Hopper, Viajemos.com.
Metasearch (Meta-search engines)
They are comparators that show prices from multiple sources (including your direct website and OTAs) so the user can choose the best option.
Business Model: They traditionally operated on CPC (Cost per Click), but the market has evolved towards CPA (Cost per Acquisition) or commission models, where the comparator receives a percentage only if the booking is completed.
Companies: Kayak, Skyscanner, Google Travel, Trivago.
B. Travel Agencies (Traditional Travel Agencies)
Agencies with a physical presence or personalized service that manage the customer's full trip. They remain a vital channel for the luxury segment or long-haul travel.
Technology: They access inventory via terminals connected to a GDS or via Broker extranets.
Companies: Viajes El Corte Inglés, Ávoris (B Travel), Flight Centre, Lufthansa City Center.
C. TMC (Travel Management Companies)
They are the architects of corporate travel. They do not only book cars; they manage expense policies, traveller safety and financial reporting for companies.
They use SBTs (Self Booking Tools), platforms where the employee chooses the vehicle from the options authorized by their company.
Companies: CWT (Carlson Wagonlit), Amex GBT, BCD Travel, FCM Travel, TravelPerk, Navan.
D. Corporates (Direct Corporate Clients)
Large multinationals that negotiate "net" rates directly with the rent-a-car for annual volume, bypassing commercial intermediaries but using the same technological infrastructure.
Profile: Companies such as Google, Deloitte or Siemens.
Technology: Direct integration into their own corporate portals.
E. Airlines
For airlines, vehicle rental is the most profitable "ancillary" (add-on service) after ticket sales.
Technology: Integration via API in the purchase flow or through White Label portals.
The CarTrawler example: It is the dominant player in this segment. CarTrawler acts as the technology engine behind airlines such as Vueling or Emirates, allowing them to offer cars from hundreds of providers under their own brand without managing operations.
Companies: Lufthansa, Qantas, SAS, Ryanair, Iberia.
3. Technical Summary of Connectivity and Models
| Channel | Place of booking | Revenue model | How they get the offer |
|---|---|---|---|
| OTAs | OTA website | Commission per booking | API / White Label |
| Metasearch | Rent-a-car/OTA engine | Cost per click (CPC) | API / Redirect |
| Agencies | Agent terminal | Commission / Mark-up | Desktop / GDS |
| TMCs | Corporate portal | Management fee / Commission | SBTs / GDS |
| Airlines | Airline website | Revenue share / Commission | API |
Frequently asked questions about rent-a-car distribution
What is a GDS in rent-a-car?
A GDS (Global Distribution System) is a technological infrastructure that does not buy or sell inventory. It acts as a data translator and carrier: it makes rent-a-car availability and prices available to travel agencies and TMCs. The commercial relationship (rates and commissions) is agreed between the rent-a-car and the final seller (the agency), not with the GDS. Examples: Amadeus, Sabre, Travelport.
How does a broker differ from a GDS?
The GDS only provides the data infrastructure. The broker is a commercial intermediary: it negotiates rates with the rent-a-car and resells through its portals or affiliate networks. Brokers typically specialize in tourism volume and dominate acquisition marketing (SEO, etc.). Examples of brokers: Auto Europe, Rentalcars, CarTrawler, DoYouSpain.
What is the difference between OTA and metasearch?
On an OTA the booking is made on their platform (the customer pays and books there). On a metasearch (Kayak, Skyscanner, Trivago) the user compares prices from several sources and chooses; the business model is usually CPC or CPA, not always commission per booking on the platform itself.
How do TMCs access rent-a-car inventory?
TMCs use SBTs (Self Booking Tools) and GDS: the employee chooses the vehicle from the options authorized by their company. The booking can be made on the corporate portal; the rent-a-car receives the booking through the same infrastructure (GDS or integration).
Why do airlines sell car rental?
Vehicle rental is one of the most profitable ancillaries for airlines after the ticket. They offer it on their website or in the purchase flow via API or white label. CarTrawler is the dominant player: it allows airlines such as Vueling or Emirates to offer cars from hundreds of providers under their brand without managing operations.
Written by
Johan Smith
RaX Strategy Team
4. References and technical documentation
- AltexSoft — Car rental APIs, integrations with GDS, OTAs and tech providers. Guide on GDS, brokers and connectivity.
- RateMetrics — How car rental distribution has evolved in the digital age: digital channels, brokers, acquisition cost control.
- BCD Travel — What is a GDS (Global Distribution System). TMC perspective: the GDS connects agencies, TMCs, airlines and SBTs.