A system may include a platform for an application to support processing flows for a service provider, such as ordering, sales, support, service delivery, and related process flows. The system may provide a limited set of application programming interfaces (APIs) that map to an application's user-experience page flows. The APIs may always appear to the application that the interaction process completed successfully—even if human intervention is required—to allow the application to complete the transaction. The system may have the ability to recognize the same user, and leverage that user's behavior across interactions with multiple sales channels. The system may thus provide, in one aspect, an enhanced user experience for ordering and maintaining complex service and equipment offerings.