Airbnb has been migrating its infrastructure to a Service Oriented Architecture (“SOA”). SOA offers many upsides, such as enabling developer specialization and the ability to iterate faster. However, it also poses challenges for billing and payments applications because it makes it more difficult to maintain data integrity. An API call to a service that makes further API calls to downstream services, where each service changes state and potentially has side effects, is equivalent to executing a complex distributed transaction.
Engineer @ Airbnb