Sometimes, you might like to send a notification based on some specific set of parameters or raising an event. Let's assume you would like to send it whenever a photo is uploaded to storage:
In this asynchronous scenario, you have an Event Listener, which listens to an event publication and performs an action based on the passed metadata. It sends a request to a Notification Service, which communicates with PNS to send a notification with the appropriate content (probable information regarding an upload status). Once more, we see the advantages of having a service acting as a proxy to PNSes—the whole communication can ...
