Objective
“Allow an application to equally be driven by users, programs, automated test or batch scripts, and to be developed and tested in isolation from its eventual run-time devices and databases.” (Alistair Cockburn)
Summary
This approach aims to simplify the application integration and it is a powerful strategy to rapidly compose new services. The pattern has been often applied with the microservice architecture and may be the future of the SOA, bypassing the meddiation of the Enterprise Service Bus (ESB), enabling high performance and scalability.
fabricioepa blog 