Push Notification is a very important technology for making information exchange fast, easy and effective in the current digital age. Most of the small messages or notifications that we see on smartphones, tablets, computers or web browsers—such as new messages, emails, app updates, offers or news—are sent via push notifications. Push Notification is basically a system through which an app or server can send messages directly to the user's device, even if the user is not using the app at that moment. This is the opposite of the “pull” system, where the user has to open the app and collect information on their own. In the case of push notifications, the information reaches the user itself. The way this technology works is relatively simple. First, the user allows notifications when installing an app. Then the app connects to a specific notification service. Whenever any new information, update or message arrives, the server sends that information to the user's device and disp...