Event
Noun · Development
Definitions
A signal that something has occurred in a system — a user click, a message arrival, a state change. Event-driven architectures decouple producers from consumers, enabling reactive and scalable designs.
In plain English: A notification that something happened — like a doorbell ring that different parts of your program can listen for and respond to in their own way.
Example: "The checkout service emits an OrderPlaced event, and the inventory, email, and analytics services each react independently."