In this article, I discuss asynchronous event-driven programming and how it's done in Twisted. Because reading about code only gets you so far, I cite examples from a real Twisted application ...

How event-driven architecture works, and its benefits Event-driven architecture is based on events, which signal to interested parties that a state change occurred in a business system.

That’s why P, or an equivalent safe asynchronous event-driven programming language, is essential and should be a required tool in every IoT or microservices developer’s toolkit.