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External services
External partner system
A system run by someone else that you integrate with: airline and hotel inventories, stock exchanges, credit bureaus, cinema box offices.
When to use
- Inventory or data you don't own
- Regulated networks you must connect to
Pitfalls
- Slow, rate-limited and sometimes down — cache what you can and wrap calls in timeouts and circuit breakers
Options by provider
The first option is what diagrams show for that provider.
Third-party (works with any cloud)
- Amadeus / Sabre — travel distribution (GDS)Managed
- Stock exchange FIX gatewaysManaged
- Credit bureausManaged
- Cinema / venue box-office systemsManaged
Related concepts
Used in
- Web crawler
- Websites — The open web
- BookMyShow
- Venue box office — Some cinemas keep their own ticketing system
- MakeMyTrip
- Airlines, GDS, hotels — The real inventory and prices
- Airline reservations
- GDS / travel agents — Indirect sales channels
- Meeting scheduler
- External calendars — Google / Outlook calendars via sync
- Buy now, pay later
- Credit bureau — Credit history for new users
- Stock brokerage
- Stock exchanges — Match orders; publish market data
- Live sports scores
- Data partners — Licensed data feeds