Embedded developers often use the term “event-driven programming” imprecisely and incorrectly. However, in the broader programming community, to be called “event-driven,” a program must possess such ...

Event-driven programming frameworks are typically used to provide multi-tasking capabilities in languages or environments that lack an explicit threading model, such as Node.js.

You could use a webhook to deliver an event, but that requires code that can handle asynchronous callbacks, with compute resources required to monitor the callback URL for events.