That seems to be quite much what my friend built in one company as customer proprietary system. Basically it looks exactly the same. Those boxes are just code modules / microservices with custom code. It's also important that everything can be configured, modified and routed in realtime by adding new boxes etc. I really loved that design. Ok, technically same results can be reached using multiple differenet architectures, but that suits microservices concept very well. Yet, it could lead to high latency depending from multiple different aspects and how modules are technically connected.
