Push notifications allow you to deliver information to a computing device from an application server where the request for the transaction is initiated by the server rather than the explicit request from the client. This allows users to receive automated information from their smartphones rather than the owner of the app manually sending out notifications. Push notifications can be added to any device that has an application option, including Android, and iOS. They are added to an application through a set of development guidelines and standards, as well as its own Operating Push Notification Service (OPNS). The OPNS release information through text, images, badges and sounds.
