How are push notifications technically designed?

...... What is push notification Push notifications are messages that appear on your mobile device. Sports results, flash sale invitations, or downloadable coupons. App publishers can submit at any time. This is because the user does not need to use the app or use the device to receive it. Push notifications look like SMS text messages or mobile notifications, but only reach users who have your app installed. Every mobile platform (iOS, Android, Fire OS, Windows, BlackBerry) has its own service that supports Push. Why is it used? Push notifications bring convenience and value to app users by reaching the user's lock screen. For example, a user may receive the following information: Sports results and news Utility reports such as traffic , weather and ski snow reports Flight check-in, change and transfer information For app publishers, push noti fications are a way to spea...