: A video required by Apple to demonstrate how an app uses specific features like remote notifications.
: Developers must generate a specific APNS certificate or a .p12 file through the Apple Developer portal to authenticate their server with Apple's service. Common Uses for Such Files A video file with this naming convention is often found in: APNS-221.mp4
: APNs is a robust, secure, and highly efficient service that enables third-party developers to send information to iOS, watchOS, tvOS, and macOS devices. : A video required by Apple to demonstrate
: On the initial launch of an app, an encrypted IP tunnel is established between the device and Apple's servers. The device receives a unique device token , which the developer's server uses as an address to route notifications. : On the initial launch of an app,
: Recorded sessions of a push notification appearing on a simulator or physical device to verify the payload's "title" and "body" keys.
Registering your app with APNs | Apple Developer Documentation