What is Listeners in Laravel, and what role does it play in a real application?

What is Listeners in Laravel, and what role does it play in a real application? In Laravel, listeners should be understood as part of a larger application architecture rather than as an isolated API call. Listeners encapsulate reactions such as sending notifications, writing audit records or scheduling follow-up work. A strong understanding includes its purpose, the layer where it belongs, the data or request flow it affects, and the situations where another mechanism may be more appropriate. Practical context: Laravel events represent application occurrences while listeners contain logic that reacts to those occurrences, helping decouple application workflows. The specific focus here is listeners: Listeners encapsulate reactions such as sending notifications, writing audit records or scheduling follow-up work. This question is designed to test not only terminology, but also how the concept fits into Laravel's request, application, database, security, or deployment workflow.