What’s New in Notifications – WWDC15

WWDC15Remote notifications are sent by your server to the Apple Push Notification service, which pushes the notifications to each device. Your app may take different actions, such as displaying a message to the user or downloading new data. Find out about important changes to the provider protocol. Learn about enhancements to the way your app can respond to notifications.

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WWDC 2015 > System Frameworks > What’s New in Notifications